Model Analysis > Creo Behavioral Modeling Tools > Analyses > Clearance and Creepage Analysis > Comparative Tracking Index > To Assign a CTI Using the Material Definition Dialog Box
  
To Assign a CTI Using the Material Definition Dialog Box
1. Click File > Prepare > Model Properties. The Model Properties dialog box opens.
2. Click change in the Material line under Materials. The Materials dialog box opens. You can create a new material or edit an existing material.
3. To create a new material, select File > New. The Material Definition dialog box opens.
4. Click User Defined tab.
5. Click to add a new parameter.
6. In the Name box, type COMPARATIVE_TRACKING_INDEX.
7. In the Type list, select Integer.
8. In the Value box, type the value of the parameter.
9. Click Save To Library or Save To Model.
10. To assign the CTI to a component, assign the material to the component.