VBA formula not working.

Hi,

I am trying to compute a relatively easy calculation within a user form initiated by hitting the "calculate button" and calling a function.

The values to be used are specified by the user via a text box input.

I also require the result to to come up in a vBok box and once the Ok is pressed the data is cleared and the code is ready to run again

I am having difficulty as the code is not responding as i wish and enters debug mode.

could someone kindly look at my code and generously help me.

big thanks in advance

regards,

e