Index: app_disa.c
===================================================================
RCS file: /usr/cvsroot/asterisk/apps/app_disa.c,v
retrieving revision 1.34
diff -u -r1.34 app_disa.c
--- app_disa.c	13 Oct 2005 23:52:42 -0000	1.34
+++ app_disa.c	14 Oct 2005 23:44:36 -0000
@@ -333,6 +333,7 @@
 		int recheck = 0;
 
 		if (!ast_exists_extension(chan, ourcontext, exten, 1, chan->cid.cid_num)) {
+			pbx_builtin_setvar_helper(chan, "INVALID_EXTEN", exten);
 			exten[0] = 'i';
 			exten[1] = '\0';
 			recheck = 1;