[Scripting Question] Key item multichoice script

[Devil Monster]

Hlw everyone i am new to scripting in pokecommunity i need a help in scripting if anyone want to help pls help me its realy important for me if i have done anything wrong then forgive and pls tell me to correct that ....
Now the issue is ---
I want to create an item say CROWNPASS
Now as it is a key item it will show us a usal four options namely use , register , give , quit.
I want that if i choose use then this will have to show me multiple choices say 5
1. Charizard
2.Greninja
3.Sceptile
4. Lucario
5.Dragonite
6. Quit

Now if i select Charizard it will run a code say pb( .....)
.......
......
and if i select Greninja it will run another code ......
......
and so on
and if i choose quit it will return to options use ,register , give , quit.Pls explain me about this or if there is any such example present in pokemon essentials 17.
Thanks for the help in advance .

 

[NettoHikari]

I would recommend these two pages: https://essentialsdocs.fandom.com/wiki/Defining_an_item
https://essentialsdocs.fandom.com/wiki/Item_effects

The first page shows you how to define it, and the second shows you where to go to code its specific effect (which in your case is making it show a menu of Pokemon on clicking Use).