> ## Documentation Index > Fetch the complete documentation index at: https://docs.xbox.com/llms.txt > Use this file to discover all available pages before exploring further. # Lobby.PostUpdate > Lobby.PostUpdate ## Method (1 of 6) Post an update to the lobby. ```csharp theme={null} public void PostUpdate(PFEntityKey localUser, IDictionary memberProperties) ``` | parameter | description | | - | - | | localUser | The local user posting the update. | | memberProperties | The member properties to update for the updating member. | ## Remarks (1 of 6) This is an asynchronous operation. Upon successful completion, the title is provided a [`OnLobbyPostUpdateCompleted`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyPostUpdateCompleted) with the `OnLobbyPostUpdateCompleted result` field set to [`Success`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/LobbyError/Success). Upon a failed completion, the title is provided a [`OnLobbyPostUpdateCompleted`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyPostUpdateCompleted) with the `OnLobbyPostUpdateCompleted result` field set to a failed error code. If applying the update would change the state of the lobby, the title is provided a [`OnLobbyUpdated`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyUpdated) sometime afterwards. This operation completing successfully only indicates that the Lobby service has accepted the update. The title's local view of the Lobby state won't reflect this update until a [`OnLobbyUpdated`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyUpdated) is provided to the title with the updated state. *** ## Method (2 of 6) Post an update to the lobby. ```csharp theme={null} public void PostUpdate(PFEntityKey localUser, LobbyDataUpdate lobbyUpdate) ``` | parameter | description | | - | - | | localUser | The local user posting the update. | | lobbyUpdate | An optional update to apply to the shared portion of the lobby on behalf of *localUser*. | ## Remarks (2 of 6) This is an asynchronous operation. Upon successful completion, the title is provided a [`OnLobbyPostUpdateCompleted`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyPostUpdateCompleted) with the `OnLobbyPostUpdateCompleted result` field set to [`Success`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/LobbyError/Success). Upon a failed completion, the title is provided a [`OnLobbyPostUpdateCompleted`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyPostUpdateCompleted) with the `OnLobbyPostUpdateCompleted result` field set to a failed error code. If applying the update would change the state of the lobby, the title is provided a [`OnLobbyUpdated`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyUpdated) sometime afterwards. This operation completing successfully only indicates that the Lobby service has accepted the update. The title's local view of the Lobby state won't reflect this update until a [`OnLobbyUpdated`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyUpdated) is provided to the title with the updated state. The *lobbyUpdate* contains fields that can only be modified by the owner of the lobby. This method fails and [`OnError`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnError) is called if one of those fields is specified and *localUser* is not the owner of the lobby. *** ## Method (3 of 6) Post an update to the lobby. ```csharp theme={null} public void PostUpdate(PlayFabAuthenticationContext localUser, IDictionary memberProperties) ``` | parameter | description | | - | - | | localUser | The local user posting the update. | | memberProperties | The member properties to update for the updating member. | ## Remarks (3 of 6) This is an asynchronous operation. Upon successful completion, the title is provided a [`OnLobbyPostUpdateCompleted`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyPostUpdateCompleted) with the `OnLobbyPostUpdateCompleted result` field set to [`Success`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/LobbyError/Success). Upon a failed completion, the title is provided a [`OnLobbyPostUpdateCompleted`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyPostUpdateCompleted) with the `OnLobbyPostUpdateCompleted result` field set to a failed error code. If applying the update would change the state of the lobby, the title is provided a [`OnLobbyUpdated`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyUpdated) sometime afterwards. This operation completing successfully only indicates that the Lobby service has accepted the update. The title's local view of the Lobby state won't reflect this update until a [`OnLobbyUpdated`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyUpdated) is provided to the title with the updated state. *** ## Method (4 of 6) Post an update to the lobby. ```csharp theme={null} public void PostUpdate(PlayFabAuthenticationContext localUser, LobbyDataUpdate lobbyUpdate) ``` | parameter | description | | - | - | | localUser | The local user posting the update. | | lobbyUpdate | An optional update to apply to the shared portion of the lobby on behalf of *localUser*. | ## Remarks (4 of 6) This is an asynchronous operation. Upon successful completion, the title is provided a [`OnLobbyPostUpdateCompleted`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyPostUpdateCompleted) with the `OnLobbyPostUpdateCompleted result` field set to [`Success`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/LobbyError/Success). Upon a failed completion, the title is provided a [`OnLobbyPostUpdateCompleted`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyPostUpdateCompleted) with the `OnLobbyPostUpdateCompleted result` field set to a failed error code. If applying the update would change the state of the lobby, the title is provided a [`OnLobbyUpdated`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyUpdated) sometime afterwards. This operation completing successfully only indicates that the Lobby service has accepted the update. The title's local view of the Lobby state won't reflect this update until a [`OnLobbyUpdated`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyUpdated) is provided to the title with the updated state. The *lobbyUpdate* contains fields that can only be modified by the owner of the lobby. This method fails and [`OnError`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnError) is called if one of those fields is specified and *localUser* is not the owner of the lobby. *** ## Method (5 of 6) Post an update to the lobby. ```csharp theme={null} public void PostUpdate(PFEntityKey localUser, LobbyDataUpdate lobbyUpdate, IDictionary memberProperties) ``` | parameter | description | | - | - | | localUser | The local user posting the update. | | lobbyUpdate | An update to apply to the shared portion of the lobby on behalf of *localUser*. | | memberProperties | The member properties to update for the updating member. | ## Remarks (5 of 6) This is an asynchronous operation. Upon successful completion, the title is provided a [`OnLobbyPostUpdateCompleted`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyPostUpdateCompleted) with the `OnLobbyPostUpdateCompleted result` field set to [`Success`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/LobbyError/Success). Upon a failed completion, the title is provided a [`OnLobbyPostUpdateCompleted`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyPostUpdateCompleted) with the `OnLobbyPostUpdateCompleted result` field set to a failed error code. If applying the update would change the state of the lobby, the title is provided a [`OnLobbyUpdated`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyUpdated) sometime afterwards. This operation completing successfully only indicates that the Lobby service has accepted the update. The title's local view of the Lobby state won't reflect this update until a [`OnLobbyUpdated`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyUpdated) is provided to the title with the updated state. The *lobbyUpdate* contains fields that can only be modified by the owner of the lobby. This method fails and [`OnError`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnError) is called if one of those fields is specified and *localUser* is not the owner of the lobby. *** ## Method (6 of 6) Post an update to the lobby. ```csharp theme={null} public void PostUpdate(PlayFabAuthenticationContext localUser, LobbyDataUpdate lobbyUpdate, IDictionary memberProperties) ``` | parameter | description | | - | - | | localUser | The local user posting the update. | | lobbyUpdate | An update to apply to the shared portion of the lobby on behalf of *localUser*. | | memberProperties | The member properties to update for the updating member. | ## Remarks (6 of 6) This is an asynchronous operation. Upon successful completion, the title is provided a [`OnLobbyPostUpdateCompleted`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyPostUpdateCompleted) with the `OnLobbyPostUpdateCompleted result` field set to [`Success`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/LobbyError/Success). Upon a failed completion, the title is provided a [`OnLobbyPostUpdateCompleted`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyPostUpdateCompleted) with the `OnLobbyPostUpdateCompleted result` field set to a failed error code. If applying the update would change the state of the lobby, the title is provided a [`OnLobbyUpdated`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyUpdated) sometime afterwards. This operation completing successfully only indicates that the Lobby service has accepted the update. The title's local view of the Lobby state won't reflect this update until a [`OnLobbyUpdated`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyUpdated) is provided to the title with the updated state. The *lobbyUpdate* contains fields that can only be modified by the owner of the lobby. This method fails and [`OnError`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnError) is called if one of those fields is specified and *localUser* is not the owner of the lobby. ## See Also * class [PFEntityKey](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PFEntityKey/overview.md) * class [LobbyDataUpdate](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/LobbyDataUpdate/overview.md) * class [Lobby](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/Lobby/overview.md) * namespace [PlayFab.Multiplayer](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference.md) ## Related topics - [Real-time messages for Lobby and Matchmaking APIs](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/Lobby/overview.md) - [Lobby.PostUpdateAsServer](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/Lobby/PostUpdateAsServer.md) - [PlayFabMultiplayer.OnLobbyPostUpdateCompleted](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/PlayFabMultiplayer/OnLobbyPostUpdateCompleted.md) - [PFLobbyPostUpdate](https://docs.xbox.com/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/functions/pflobbypostupdate.md) - [Lobby.ServerPostUpdate](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/Lobby/ServerPostUpdate.md)