How to change the layer materials of the multilayer panel in the curtain wall

[Isaac Newton]

Good time of the day, gentlemen.

I need to make a part of the curtain wall same as the wall surrounding it. For this purpose I turn one part of it into a multilayer panel, and intend to set up its layers the same way the layers of the wall around it are set. It seems, however, that I can only change the thickness of the layers, but not their materials:

When I click on the little arrows next to the representations of the materials, nothing happens:

[Botonis · Accepted solution]

Unfortunately this is a bug detected in 26 and we are waiting for a fix.

The only way is to copy the curtain wall, import it in 25, edit it and recopy it to the 26.........

https://community.graphisoft.com/t5/Design-forum/Unable-to-set-CW-Composite-Panel-skin-building-mate...