static int32 AddHostMemberVariable ( [URigVMBlueprint](API\Plugins\RigVMDeveloper\URigVMBlueprint) * InBlueprint, const [FName](API\Runtime\Core\UObject\FName) & InVarName, [FEdGraphPinType](API\Runtime\Engine\EdGraph\FEdGraphPinType) InVarType, bool bIsPublic, bool bIsReadOnly, [FString](API\Runtime\Core\Containers\FString) InDefaultValue )