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# Lobby.LobbyMemberCountRemainingKey

> Lobby.LobbyMemberCountRemainingKey

A special, predefined search key, which can be used in the [`FilterString`](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/LobbySearchConfiguration/FilterString) filtering and sorting strings to search for lobbies based on the number of remaining members who can join the lobby.

```csharp theme={null}
public static readonly string LobbyMemberCountRemainingSearchKey;
```

## Remarks

Example: "lobby/memberCountRemaining lt 5"

## See Also

* class [LobbyConstants](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/LobbyConstants/overview.md)
* namespace [PlayFab.Multiplayer](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference.md)

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## Related topics

- [Lobby.LobbyMemberCountSearchKey](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/LobbyConstants/LobbyMemberCountSearchKey.md)
- [PFLobbyGetMemberPropertyKeys](https://docs.xbox.com/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/functions/pflobbygetmemberpropertykeys.md)
- [Lobby.LobbyMaxMemberPropertyCount](https://docs.xbox.com/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/LobbyConstants/LobbyMaxMemberPropertyCount.md)
- [PFLobby Search Keys](https://docs.xbox.com/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/constants/pflobbysearchkeys.md)
- [Find lobbies](https://docs.xbox.com/services/playfab/multiplayer/lobby/find-lobbies.md)