Was this ever resolved? I am trying to do something similar and received the same error message. I am not sure what I did wrong.

WqlQuerySource = "SELECT * FROM __InstanceCreationEvent WITHIN 5 WHERE TargetInstance ISA 'CIM_DataFile' AND TargetInstance.Drive = 'H:' AND TargetInstance.Path = '"+ REPLACE( @[User::Path], "\\", "\\\\") +"' AND TargetInstance.FileName LIKE '"+ @[User::FileNamePrefix] +"%' AND TargetInstance.Extension = '"+ @[User::FileExtension] +"'"