How to make a global script edit a scene's node

[stoic bane]

I have a global script that isn't inside any scene at all, how do i get it to change the value of a component inside a ui scene ?

[dusty hawk]

It's doable, but I think the recommended way would be changing the variable amount in the Global Script, after which, the node that changes the amount signal to the ui a change has been made. The ui should refer to the GS for the changed amount..