Hi Tom,
Thanks for your help!
So I can create another form in System Settings for user to enter Tax data and this Tax data value will be global variable? (which value can be refferred by Tax attribute in all Apartment records)
I did this but when I tried to load the form (to enter the Tax data), an error message pops up "Unable to edit/view unresolved object".
How can I create a global variable that's able to be edited?
Thanks