Steve,Thank you.  Sorry for the incorrect posting.  Hopefully this will get me the response I need.

I am using Adobe Designer 7.0, which I know is outdated, but it meets my needs.  I have a PDF form with a two-radio button field - 4.0 and 5.0.  A scholarship applicant enters his/her GPA, and clicks the appropriate scale.  If the GPA is on the 4.0 scale, the CALCGPA field displays the GPA the stude...