asterisk users - Jun 2005 - Handling -1 in dialplans

Hi,

How do you handle the case where a module returns -1 ?

eg consider this:

   exten => 123,1,Answer
   exten => 123,n,Playback(some-message)
   exten => 123,n,etc ...
   exten => 123,n,etc ...
   exten => 123,n,etc ...
   exten => 123,n,Command(${SOME_PARAMETER})

Now what if command returns -1 here ? I would like to branch
accordingly. Also how do you handle jumping to "n+101" here - you
don't
know what "n" is ?

Thanks,
Thomas