I apologize, i want to replace the material but un gdscript..
i.e: i have a material with albedo: White as base...
Then i have another material with albedo Red for the selected state, i've found set_surface_material() ir requires the index and the material....
So the question Is that how do i change the material by code...
Is there any way of "pointing" to the red material
Thanks for your help!