Hello,
Using Nitro Pro 11 x64, version ending in .475:
I have some text box number fields wherein I always want the number to be negative, so I created a custom validation script for these fields:
event.value=Math.abs(event.value)*-1;
This works properly in Acrobat Pro X and Acrobat Reader DC - any number entered is automatically a negative. In Nitro, however, the number will always be a positive number unless I explicitly add the '-' to the front of it when typing it in.
I will add other examples to this post as I find them.