text box validation rule on a form
I have 2 fields on a form that if the sum of these 2 fields go over the limit I want to give the user an error message. On the 2nd field I am summing the 2 field together in the validation rule =[Runtime_minutes]+[NoWork_minutes] <>480 , but it doesn't send the error message. I have also tried to add the form to the equation and I get the object doesn't contain the automation object error. What am I doing wrong? I thought it would be a simple addition. Thanks for your help on this.