If it's a drop-down field, why validate it? Just set it to only show the acceptable values...
The min and max of the field could change based on the answer from drop down list.
Is the other field a drop-down as well, or is it a text field?
It is a text field.
Ah OK, I understood it was a drop-down field...
Well, assuming this file is going to be used in Reader then you can't change the validation script associated with the field.
What you can do is write a script that takes the value of the drop-down into consideration.
So if the drop-down equals A then the script will allow values 1 to 5, if B then 1-10 and if C then values 11-20, for example.
Thanks try67. My head is going in circles right now. I will try and write a script to control min and max. Will let you know what I figure out.
Thanks for your help.