I am wanting to pickwhip the y axis of 'Layer A' with the y axis 'Layer B'. I want the 'Layer A''s Y-Axis, when adjusted between 0-100, to adjust 'Layer B''s Y-Axis to a range of 25-75 at the same time. Can someone please help?
You can use the linear() expression function to remap ranges.
The linear() expression might be exactly what you want.
(Edit: I see Mylenium has come before me with a fuller answer. That's what I get for not refreshing the page after it's sat open for a while...)
Mylenium and Szalam, thank you! Worked perfectly! The thing I was missing was the array: [value, pOutY]