Exec Program

Dear Savers ... I got this error in my debug the php program check something and return 0 for true and -1 for false and the php code work fine but the I don't understand what to echo back or return to freeradius to understand the situation I try to echo and not echo when I echo the value it pass like this so what is the best way to do such a thing (2) update control { (2) Executing: /usr/bin/php -f /opt/ajrass/egy-radius-cloud/freeradius/exec/dns.php: (2) Program returned code (0) and output ''1" (2) Tmp-Integer-0 := 0 (2) } # update control = noop (2) if (Tmp-Integer-0 < 0 ){ (2) ERROR: Failed retrieving values required to evaluate condition (2) } # policy call_dns = noop Mohammed