DATEDIFF When Usinf IF Argument

[RichBurdick]

I am trying to wrote a DAX measurement where based on the text value of a column use these two date fields to calculate days.

I have been able to figure out the DATEDIFF part of the measurement but have been running into issues with the IF. 

Here is the measurement:

CAPA Planning Days = IF(CAPATable[Record_Source] = “Audit”), (DATEDIFF(MIN(CAPATable[DATE_OPENED]), MAX(CAPAPlanFirstApproval[FirstDate]), DAY))

The DateDiff works fine but could use some assistance on the IF part