virtual bool UpdateInstances ( const [TArray](API\Runtime\Core\Containers\TArray)< int32 > & UpdateInstanceIds, const [TArray](API\Runtime\Core\Containers\TArray)< FTransform > & UpdateInstanceTransforms, const [TArray](API\Runtime\Core\Containers\TArray)< FTransform > & UpdateInstancePreviousTransforms, int32 NumCustomFloats, const [TArray](API\Runtime\Core\Containers\TArray)< float > & CustomFloatData )