Problem with OnPhotonCustomRoomPropertiesChanged

I'm trying to use OnPhotonCustomRoomPropertiesChanged (), in several ways I've seen in several different references, however I always get the same error, the console says I have a parameter, and the method needs 2, I'm lost, after searching a lot I solved ask for help here. If anyone can help me, thank you in advance.

Error:
Failed to call function OnPhotonCustomRoomPropertiesChanged of class GerenciadorPartida
Calling function OnPhotonCustomRoomPropertiesChanged with 1 parameter but the function requires 2.