I wonder if anyone can help please I want to create a date 90 days in advance 
 
they pick the date so when i add this [x offset="+90 days"] i get message 
 
There is an error in the calculation in the field with key 
[1234 offset="+90 days"]
Unexpected identifier offset 
 
Does anyone have any idea what i could be doing wrong on a relatively simple task  :-s :-s :-s 
 
Thank you in advance!