Check if value change

Hello, i need an help

I need to check in a loop if a value change. I'll expalin better

I have an inputbot with value = 10

I'll change the value to = 12 it's different to 10 so do func MyFunc()

I'll change the value to = 11 it's different to 12 so do func MyFunc()

In real temp because i need it a loop

If i put GUICtrlRead in the While...WEnd is too much because check every time. How to store the old value in a variable and the see if it change?

Thanks, tell me if i wasn't clear