Can you help me? About SwitchMtl

[sanghyun_han]

As shown in the picture, there are two VRaySwitchMtl materials.
Switch Material 1 is the base paint of the vehicle, and Switch Material 2 is the two-tone paint.

What I want to know is how to make Switch Material 2 change its number along with Switch Material 1 when I change the switch value of Material 1 from 0 to 9.

Would you be able to provide a related tutorial or any guidance on this?

[hermit.crab]

You can use a Bezier Float to control both values simultaneously. To do that, in the Slate Material Editor, right-click the VRaySwitchMtl and activate "Show Additional Parameters", then plug the Bezier Float to the switch_number of both. This way, changing the value of the Bezier Float changes that Switch Value for both materials.

[kosso_olli]

Another option would be the material ID modifer on these objects along with a corresponding Multisub material. That way you can animate the ID of the material modifier, and the multisub will make the switch to another material.