Variable options in the choices menu

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Hello! I am trying to make a game with a battle system in the event page. I am doing this because I want to make the battle as customizable as possible, and mostly of my own doing, as well as cutting down on the animations that I have to draw. I have most of the kinks of the system worked out except for the item and the equip menus. This is difficult because I want to be able to include all of the Items/Weapons on the menus, yet I want to be able to omit the ones that the player doesn't have. So far I have made a system that is able to detect if the player is carrying a weapon, I just don't know how to use that to help me. My goal is to hide what isn't in the player's inventory in the choices menu. Thank you all.