Define the Dimension System Variables
The dimensioning system variables control the appearance of dimensions. The dimension system variables include DIMAUNIT, DIMUPT, DIMTOFL, DIMFIT, DIMTIH, DIMTOH, DIMJUST, and DIMTAD. You can set these variables by using the SetVariable method. For example, the following line of code sets the DIMAUNIT system variable (the units format for angular dimensions) to radians (3):
ThisDrawing.SetVariable "DIMAUNIT", 3
See “Use Dimension Styles” in the User's Guide for more information about the dimensioning system variables.