bool Matches ( const [FNiagaraVariableBase](API\Plugins\Niagara\FNiagaraVariableBase) & OldVariable, const [UNiagaraEmitter](API\Plugins\Niagara\UNiagaraEmitter) * InEmitter, [ENiagaraRendererSourceDataMode](API\Plugins\Niagara\ENiagaraRendererSourceDataMode) InSourceMode )