(solved) How do we make a GUI display a number variable?

this is solved, so nothing to see there, i will leave the original thing tho because why not:

I want to make a shop mod, but i want to make the money display in the GUI, but it only supports string variables it seems.. i have no idea how to do this but i also tried to make it a command (/money) to see our money, but i don't know what block to use, i can't use the "send message" block because it only uses string blocks. i'm just stuck, so please help me if it is possible