[asterisk-users] Asterisk Messaging Refuses To Work!

[XBrian]

I am pulling my hairs out here. This is my dialplan.

exten => 100,1,Set(AGISIGHUP=no)
exten => 100,n,AGI(a2billing.php,4,callingcard)
exten => 100,n,Set(__APP_MSG_IND=${APP_MSG_IND})
exten => 100,n,Set(__APP_MESSAGE=${APP_MESSAGE})
exten => 100,n,Hangup()

exten => h,1,GotoIf($["${APP_MSG_IND}" = "YES"]?send-msg,1)
exten => h,n,Hangup()

exten => send-msg,1,SendText(${APP_MESSAGE})
exten => send-msg,n,Hangup()

I can see on the command line that the SendText() is actually being called, but 
the softphone isnt getting the text.
What am I doing wrong?
Is there a variable to be set?

Any ideas will be most welcome