How to add items from a json to a layout group in text

I was trying to make an inventory system when I realized that I need to add the items from a json to a layout group. I already have it so that when you get an item using right click on a box it will be added to PlayerInventory.items.insert_item_name here I just need it so that every item in a json will appear in text in a layout group.

https://playcanvas.com/editor/scene/1960886

all the scripts in use are playerinventory, itemcheck, and pickupItem.

press e to bring up inventory
press right click on a box to add a box to inventory