Actually you (as far as I know) cannot. The two common 'workaround' I have seen is to implement the "Fraction" as two text boxes (Numerator) and Denominator) with the occassional variation of having and extra control between (sometimes a text box otherwise just a label) to accept (or hold) the division symbol OR enter the "fractional" value, let Ms. A, convert it to a decimal, and then do the 'reduction' to the least common denominator, which just approximates the numerator / denominator. In either situation, you end up using (and perhaps storing) the two seperate values, usually to no particular advantage, as Ms. A (and other MS family menbers) will just 'do the math' whenever you enter the fraction anyway. Perhaps (JUST perhaps) you really do have a UNIQUE situation where the parts are REALLY REALLY REALLY REALLY really different?
MichaelRed
m.red@att.net
Searching for employment in all the wrong places