--- libaitio/src/aitio.c	2011/02/10 19:34:53	1.2.2.1
+++ libaitio/src/aitio.c	2011/02/10 19:45:07	1.2.2.2
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: aitio.c,v 1.2.2.1 2011/02/10 19:34:53 misho Exp $
+* $Id: aitio.c,v 1.2.2.2 2011/02/10 19:45:07 misho Exp $
 *
 *************************************************************************/
 #include "global.h"
@@ -358,21 +358,24 @@ end:
 /*
  * ioVarAst() Function for evaluate string like asterisk variable "{text[:[-]#[:#]]}"
  * @csString = Input string
- * @strLen = String length
  * return: NULL error, !=NULL Allocated new string evaluated from input string, must be free()
 */
 char *
-ioVarAst(const char *csString, int strLen)
+ioVarAst(const char *csString)
 {
 	char *ext, *str, *out = NULL;
 	int e[2] = { 0 };
 
-	if (!csString || !strLen)
+	if (!csString)
 		return NULL;
 
-	if (!strchr(csString, '{') || !strrchr(csString, '}'))
+	if (!strchr(csString, '{') || !strrchr(csString, '}')) {
+		memset(io_Error, 0, STRSIZ);
+		snprintf(io_Error, STRSIZ, "Error:: Invalid input string format ... "
+				"must be like {text[:[-]#[:#]]}");
+		io_Errno = EINVAL;
 		return NULL;
-	else {
+	} else {
 		str = strdup(strchr(csString, '{') + 1);
 		*strrchr(str, '}') = 0;
 	}