VerifyContainer function question
Below is calculation field's calculation which I am trying to have it show whether there is an image in the container field "RDS_Diagram". At the moment the calculation is returning an X for all the records yet I can see a number of records do not have an external jpeg referenced to it.
If (VerifyContainer ( RDS_Room_Diagram ) = "?" ; "" ; "X" )
Is there a simpler way to do what I want and or am I missing something about the VerifyContainer function?