Thanks for the quick replies. Maybe my question was not too specific. I used fsolve to help me to solve for 2 non-linear equations. These two equations are depended on the inputs from mulitple cells on the spreadsheet. So, if I modify these cells, I want Maple to solve the new sets of equations for me instantly and store the results into cells that I want. That's my whole point of making a spreadsheet afterall. If that doesnt work on Maple, can someone teach me how to set equations and use fsolve in excel? I tried the step given in the help section, but it gave me an error. Thank you.