How to make one of 3 text boxes required

[philjackson01]

Hi All,

I have a form with three text boxes and i am trying to figure out how to ensure atleast one of these boxes is required and would error if none of these are completed. I've had a few attempts but to no success so i would appreciate any help you can offer.

Many thanks,
Phil

 

[pr2-eugin]

Hello philjackson01, Welcome to AWF

Try to read through this link : http://www.baldyweb.com/BeforeUpdate.htm