Hi, is it possible to define a macro syntax and concatenate fields or variables?

For example, imagine we have PDF documents somewhere into our RMS system where documents name are based on event number. For example, document P123456.PDF is a document that contain data about event #123456

I wish to give users a way to open that document with a macro command when the event is displayed into IDispatcher

Is it possible to create a macro the will looks like EXEC "C;\blabla blabla\AcroRdr.exe" "W:\eventdata\"$E".PDF"