Question

7.1.9 @DateTime.TimeDifference returns invalid date time string that can not be assigned to a DateTime property
I was trying to set a DateTime type property using declare expression like below, however the expression fails because @DateTime.TimeDifference function returns invalid date time string.
.ToDate =@DateTime.TimeDifference(.FromDate,7,0,0,0)
FAIL
Step Status Info
** Invalid datetime format/Invalid datetime "Fri 2016/03/04 22:31:00 GMT+00:00"
Is this a known issue? or is it designed to return a date time string that can not be directly assigned to a DateTime type property?