Arcade Expression does not populate field

[TimHayes3]

Hello, 

In Field Maps Designer - Form, I have created an expression that if UPD_PERSON contains the letters "FFD" that the value in UPD_PERSON will get populated in UPDATE_BY.

I test it in Field Maps, make edits to a point, and the UPDATE_BY field stays empty. 

Here is the calculated expression I added to UPDATE_BY field:

if (Find("FFD", $feature.UPD_PERSON) > -1) {

  return $feature.UPDATE_BY;

}

Can someone tell me what I need to do fix the expression?

On a separate note, I have a UPDATE_DATE field that gets autopopulated with the current date using the Arcade expression Now (). No problems with this expression. 

Thank you. 

[TimHayes3 · Accepted solution]

I figured this out:

var DEPT1 = $feature.UPD_PERSON;

if (Find("FFD",DEPT1,0)>-1)

{return $feature.UPD_PERSON;}

Now it works!