DateTimeAdd with DateTimeLastofMonth on a specific field

[alphabex18]

I am using the formula tool for changing a field based on a condition. I am using the Output column "GroupTermDate", and i want to change that field. 

Here is my IF Statement that isnt working.....

IF [GroupTermCode] = "NP"

THEN DateTimeAdd(DateTimeLastOfMonth(),1,'month') {I cant figure where to insert the field "GroupTermDate" that i want this part to change.}

ELSE [GroupTermDate] ENDIF

Bottom line, if the group term code is "NP", then i want to current GroupTermDate to change to the next month on the last day of the month. If the group term code is not NP, then it can stay the same. 

Thank you

[geraldo · Accepted solution]

hi

check this formula

DateTimeTrim(DateTimeAdd ([GroupTermDate], 1, 'month'),'lastofmonth')

[]

[alphabex18]

Bless your heart Geraldo! it works

Thank you so much