IIF syntax error (comma)

[Blkblts]

I have a report that contains a controlsource to employee the value is either T or F I set up an unbound field whose controlsource is IIF([Employee] = "T","Yes","No"). When I run the report I get
Syntax error(comma)in query expression [IIF([Employee] = "T","Yes","No")]. What am I doing wrong???

Thanks
kim

 

[Blkblts]

Sorry everyone. I built with query builder and like magic it worked....

kim