Hi JoelMckone,
I don't know of any way to do so. But recall that you can use the Parameter Editor to add/edit parameter formulas as well,
I'll typically just add an extrusion value of Height = 3.333333333333333333 or something obvious and then jump into the parameter editor to replace that value with a formula.
3.333333333333333333 just makes it easier for me to find when many parameters are present, without me having to think too hard.
Not sure if that helps your workflow or not.
I hope this helps.
Best of luck to you in all of your Inventor pursuits,
Curtis
http://inventortrenches.blogspot.com