Calculating number of days, help.

Hello, a bit cheeky to dive on with a first post question but I can't seem to work it out.


Using three different dates,calculate the the number of days if B is less than C answer = nil but if B is greater than C, the number of days C minus A.

IE. A= 1/4/14 B= 31/7/2014 C=30/6/14

Can anyone help with the argument string?

Thank you

Thank you so much. It works perfectly.

Can it really be that easy? I've been making such heavy weather of this. Thank you, I will try it right now.