Edit: Missed the msg from MourningStar, Glad you got it working... no credit needed for my part.
@dvo
Yeah, we don't expect credit for correcting code, just as Yincognito said...
@ MourningStar
From your screen shot, something must have gone wrong in your 'cut/paste'...
Try the package posted above by Yincognito which should give you everything.
The way the scroll works is by adding Mouse action bangs to [MeterTemperature] that set a new value for the 'Scale' variable, clamping it between 0.1 and 3. If you look at the code I posted you will see the mouse scroll action bangs at the end of that section.
I can lead you in the right direction, but some study of the
documentation is required.
You may find performing the
basic tutorials helpful to understand how measures, meters , and action bangs work.
Keep learning, it is not too difficult and will get easier the more you learn.