To show an ItemsAdder item with custom texture on DeluxeMenu you have to add this special attribute to the icon of your menu:
nbt_int: CustomModelData: 1
Instead of 1 you have to set the CustomModelData of your custom item.

How to get the CustomModelData value?

You have to use the command /iatag while holding an ItemsAdder item, then search for CustomModelData value.
Last modified 1yr ago