how can i set vending machines to use this?

I downloaded the plugin https://umod.org/plugins/compound-options and in the data folder
and set currencyid: -1779183908 and it does work but you can also get regular paper and use it as well.
also in the vending machines it looks just like paper. is there another plugin i can use. also it's a custom compound not the default one butt it does use the compound vending machines. which compound options detects them and i cans et the prices in those.

i've seen it done on other servers like [hard] zombies.  but not sure what i am doing wrong.

3 minutes ago, AtomicTexan said:

and set currencyid: -1779183908 and it does work but you can also get regular paper and use it as well.

 Plugin is taking item based on item id, to take item based on skin id it would require different method.  

 

6 minutes ago, AtomicTexan said:

also in the vending machines it looks just like paper

You can only change skin id for "sale" item in vending machine, skin id for "cost" item is client side. Only thing you could really do is draw custom ui over vending machines with cost item of paper. Its not really something doable for public plugin since it varies per use case.

Changed Status from Pending to Not a Bug

ok so how can i do it then? I've seen other servers with atm machine cash in the outpost/bandit vending machines? these answers didn't actually answer anything.
They didn't have a custom UI.