Thanks for your explanation, no matter what I try nothing happens, this is my full code (I've changed some of the text boxes to make it easier for us to understand)..
MonthsBox displays how many months the person has donated.
TotalTextBox displays the final calculation amount by how many months, times the donation amount (we have two which I select from a drop down combobox)
FinalDonation adds the CashDonation amount and the TotalTextBox together to show how much a person has donated to our charity.
All works, just a pain keep placing a number in the FinalDonations to show the final amount.
The main places I will edit are the donation amount and the cash. Any help would be grateful.
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