Try the following two things :

- Add a visible control with a formula and the value quality > 2.5

- Add a visible control with a formula and the value quality * 10

I suspect it's a format problem

here is what I went through and what actually worked:

and(Quality>2.5,Quality<3.5)  this results as True for 2.5-3.5 and hides
the panel…  which is the exact opposite
of what I am trying to do.

This evaluated true all of the time: and(Quality<2.5,Quality>3.5)
not sure why because it should be false between 2.5 and 3.5

So I tried: not(and(Quality>2.5,Quality<3.5))
this worked oddly…causes the form to error (without actually throwing an error)

Then: not(Quality>2.5,Quality<3.5) but NOT apparently can only
take one argument as this one only evals the first argument

This one: not((Quality>2.5,Quality<3.5)) only evals the second argument

Here is what finally worked…only about 2hrs of
banging my head against the screen…

not(greaterThan(Quality,2.5)&&lessThan(Quality,3.5))

Has Nintex published anything about rules? I can’t seem to find
anything except a page about their symbol usage….