TVariableMutatorOperator ( [TDataWriteReference](API\Plugins\MetasoundGraphCore\TDataWriteReference)< [FVariable](API\Plugins\MetasoundGraphCore\TVariableMutatorOperator\FVariable) > InVariable, [TDataReadReference](API\Plugins\MetasoundGraphCore\TDataReadReference)< [DataType](API\Plugins\OptimusCore\DataType) > InData )