Fundamentals > Relations and Parameters > Relations > Relations in Sections > Specifying User-Defined Parameters in Sections
  
Specifying User-Defined Parameters in Sections
At the section level (Sketcher mode), user parameters can be created only through relations.
The user parameters are evaluated and stored in the parent model where they can be accessed as other model parameters. You can also assign relations in a section to user parameters in the parent model.
 
* You cannot access user-defined parameters from the parent feature of the section.
If you choose Show for the parent model (Tools > Relations > Show in the Relations dialog box), the Information window displays the relations in the top level of that model and in the feature sections (but not at the feature level) and it lists the user parameters under the heading Symbolic constant. It does not make any distinction between parameters created at the model level and those created at the section level. The parameters are listed in order of creation.
You can modify or use user-defined parameters from the parent model in section relations. You can assign values to the same parameter in several sections. After regeneration, the parameter has the value of the last relation to be evaluated.
 
* If you try to assign a relation outside the section to a parameter that is already driven by another relation in the section, you get an error message when the system regenerates the model. The same applies if you try to assign relations in a section to a parameter that is already being driven by a relation outside the section. Remove one of the relations and regenerate.