I was wondering if anyone can help me with a problem that I am having. I have written a vb function that validates a number of text fields for being Empty or Null. However if I go into these fields and enter text and then delete it, the validation no longer works. At present I am validating using Isnull and variable = "" - what am I doing wrong and what do I need to add in order to pick this eventuality up?

Use the Len() function.