typedef TMulticastDelegate_TwoParams< void, [JoinInProgressDataResponsesArgType](API\Plugins\Party\Party\FPartyMemberRepData\JoinInProgressDataResponsesArgTy-), [JoinInProgressDataResponsesArgType](API\Plugins\Party\Party\FPartyMemberRepData\JoinInProgressDataResponsesArgTy-) > FOnJoinInProgressDataResponsesChangedDif