How do I change the loss of a via?
Geometry Elements - Vias
The loss of a via is determined by the metal type of the via. The metal type of an edge via is always the same metal type as the polygon to which the edge via is attached. Polygon vias use the default metal type when they are created. The default metal type is set using the Circuit => Metal Types command. You can change the metal type of a via polygon.
To change the metal type of a via polygon:
Right-click on the via polygon and select ''Properties'' from the popup menu which appears on your display.
The Via properties dialog box appears on your display.

Select the desired metal type for the via from the Via Metal drop list.
You may use any metal type defined in your circuit for the via metal.
Click on the OK button to close the dialog box and apply the change.