Defines the return type of the both the Magnitude property : For DataRepresentation.Field, the return object is a Field For DataRepresentation.Flexible the return type is depends on the current configuration of the Magnitude property: In constant mode, it returns a quantity In tabular mode, it returns a tabular data table In function mode, it returns a string containing the expression used to generate the boundary condition data In table mode, it will return the table object that is currently assigned to the load