How to write a script to check if item used?

Hi there i am was working on a on my first hack rom. While working on this rom according to my storyline i have to write a script that will check if player used a certain item during battle. The reason i have to do this is i am going to put z moves in my rom so i actually want to write script if player used z ring from key items poket so please if anyone can help me leaves a comment down

Thanks in advance.

Heyo, welcome to PC! Unfortunately, this section is for introducing yourself to the community, so I'm gonna have to lock this. But to answer your questions, check out our Fan Games section, more specifically, the Game Development section to get help with scripts. If you have any more questions about PC, don't hesitate to contact me. I hope you decide to stay active even outside of the ROM Hacking sections~!