Hi, I put the formula in the Text box field in the control source in the property's tool box and i don't know if it will save that calculation to the table. I was wondering if i can do VBA code to save the the calculation in the table. Please help me out!!! I have a field called CA Weigt and i put the formula in there as =[Weight] * 0.4536 and it works. How would i put it in a vba code.