Can we build an expression to NOT update an AD field with BLANK info from UKG

For example…

If we have a phone number in AD but NOT in UKG we don’t want to blank out the phone number field.

Yes, it is possible to create an expression that first checks if the UKG Telephone number is null or blank.

If the UKG telephone number is null or blank, then do NOT update AD

If the UKG telephone number it is NOT null or blank, then update AD

WHEN
String.IsNullOrWhiteSpace(Employment.WorkPhoneNumber)
THEN
Ignore

WHEN
Default
THEN
Employment.WorkPhoneNumber