How to limit the use of a menu item?
 

I mean if i want an item inside a menu to be bought only once per round How could i do that?

Re: How to limit the use of a menu item?
 

Just try global integer variable.

Re: How to limit the use of a menu item?
 

you should have understanding on how things work. As zmd94 suggested, create a global variable and for set it to true/false and check the value before executing a certain part of code.