Hello guys, 
I'm having a little difficultly 
I've a 2 custom fields one with date time data type and the other is date data type. 

what I'm trying to do is 

variable1 = variable2 + 30 ; 

where v1 is date datatype and v2 date/time data type .
basically i want to add date from next 30 days


and Im getting an error as "Illegal assingment from daterime to date