Formulas in Constraints - Paramatric Design

Formulas can be added to dimensional constraints

This dimensional constraints keep hole centered in a rectangle

Create User Parameters

Parametric tab > Manage panel > Parameters Manager

Click Parameter button, create User Parameter:
Name: Circle
Express: 20

Change other parameters Expressions:
d1: Circle * 2.5
d2: Circle *5
dia1: Circle

 

Name of User Parameters cannot contain space, being with number, more than 256 characters