I want to make a custom store through the deluxemenus plugin, but I can't add an icon. How do I do this?

'minister':
material: birch_sapling
nbt_int: CustomModelData:18001
display_name: 'Minister'
lore:
- 'test string'

I tried to make such a setup, but it doesn't work

Unless it supports adding items saved from a file, custom NBT tags, or giving items via command you're not going to be able to put magic items in that menu.

Deluxemenus support custom nbt tags

https://www.spigotmc.org/resources/deluxemenus.11734/update?update=285631

Can it do sections (compound tags)?

If so, you could try setting wand.template to minister

EDIT: To be clear, a structure like

wand:
   template: minister

So i need do this?

nbt_int: '{CustomModelData:18001,template:"wand"}'

not work :(

FIXED. It was necessary to install the dev build of deluxemenus to display nbt textures of magic