To change an NCVAR, type in ncvar at the command prompt, press Enter and you will see the screen shown here. There are four types of NCVARs.
You must select the type of variable you wish to change and pick 'OK'.
You should know the name of the NCVAR you want to change, and the section that the variable is in, so that you lessen the chance of picking the wrong variable and making a mistake.
After selecting 'OK' you will see the Geometric Variables dialog box.
From this screen you can select the name of the NCVAR you wish to change. Select the variable and the variable will show up in the Value box and you may input the new value for the variable and then press Enter to see the change, then click on 'OK'. You will then return to the Router-CIM Variables dialog box where you select 'Exit', to return to the AutoCAD screen.
NCVARs are extremely syntax sensitive! Enter the value exactly as it is presented, or the result may not be proper.