You can replace one placed model attribute with another.
Procedure
Click the placed model attribute.
Activate the Format tab bar.
Click Representation. The Properties dialog opens.
In the Model attribute window, select the model attribute that is to replace the former attribute.
If necessary, specify the placement and display settings.
Click OK.
If the selected model attribute has no value yet, a corresponding message is displayed and you are asked whether you want to edit the attribute. If you click Yes, the properties dialog containing the attributes will open and the relevant attribute is selected for editing. Enter a value. Click OK.
The new model attribute has replaced the old.