How to convert date of invoice to number of day ?

[paulyeo11]

Hi All

I have a field date_invoice which display when the invoice was issue ? and i like to convert this date by minus today date and give the total number of day due.

May i know how to do it ?

I try :-

date(today) - date_invoice

Not working

Paul

[paulyeo11]

‌HI Sunny

yes you are right , I have Chamge it already

Paul