Need help with shop mechanics

So basically I have a shop where you can buy different weapons, then you can go to the equip screen and equip them. I know that I will need to make a variable for each of the available weapons so that they appear in the equip screen, but is there an easier way?

This is the only way I can think of right now

System:Compare Variable, (Weaponname)= 1 System: Create object (Weapon) at x,y

If it's a very simple shop then you can just place them in the layout and go to it. If it's more complex you could use an array (check the manual) to store the data of all the weapons. You can store weapon names and co-ordinates in an array spreadsheet style file then on start of layout load all of the data into an array and run it.