Arduino code to turn ON/OFF LED using gsm sim900A modem


i'm doing a project on turning of LED ON/OFF by using GSM SIM900A
modem and arduino.

I need a arduino code which reads a sms ON and turns LED ON and send sms to the number about the status of the LED and when i send sms OFF ,it turns LED OFF and send the status of the LED sms.

Please i'm struck with the project i kindly request you to do the needful

I have the same question, can anybody help us in this matter?
I also need a code to TURN ON and TURN OFF LED via SMS