Skin Help

Im trying to make a custom skin for the dryvan trailer. I have used this video but it seems that it is still not in the game and i cant find out why. Ive put below the materials.cs notepad and the .jbeam

 

If you upload the full file here, I can try to fix it for you. Also, what do you mean by it not being in the game? Does it not show up in the parts selector, or does the skin itself not show up on the trailer?

 

Materials.cs is not used anymore and should be avoided
This tutorial is also kind of outdated as well
There's an up to date skinning tutorial on the modding for dummies discord server, but you can also have a look at the "skin.materials.json" file in vanilla vehicle game files.