YX=FVal(abc!test)
 
Function FVal(rvntFieldVal As Variant) As Variant
  If IsNull(rvntFieldVal) Then
    FVal = vbNullString
  Else
    FVal = CStr(rvntFieldVal)
  End If
End Function

dbayerTo be is to do (Rene Descartes)To do is to be (Kant / Nietzsche / Sartre u.a.)Do be do be dooo (Frank Sinatra, Strangers in the Night)