Factorial Function

Hello,

I am creating a factorial function in VBA Excel for a calculator button. I am not allowed to use built in functions. The code that I am currently using is as follows:

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I am not quite sure why it will not work. I am very new to VBA. Please reply as soon as possible if you have any solutions to my problem.

Thank you so much in advance!

~ Microsoft Excel ~

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I like recursion

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