SIM900

Projects Programming
1

Hello you all,
I'm trying to send two values to my database.

gprsSerial.println("AT+HTTPPARA=\"URL\",\"http://xxxxxxx.xxx/arduino/SaveToMySQL.php?T1=38.60&T2=3.45&key=keykey\"");

The static values work fine. I need to replace the values of T1 and T2 with variables vin and amps.
I can't get this to work. I tried

gprsSerial.println("AT+HTTPPARA=\"URL\",\"http://xxxxxxx.xxx/arduino/SaveToMySQL.php?T1="" + vin + ""&T2="" + amps + ""&key=keykey\"");

But no entry in the DB.

gprsSerial.print("AT+HTTPPARA=\"URL\",\"http://xxxxxxx.xxx/arduino/SaveToMySQL.php?T1=");
gprsSerial.print(vin);
gprsSerial.print("&T2=");
gprsSerial.print(amps);
gprsSerial.println("&key=keykey\"");

I'm shure I'm doing something wrong in my typing but can't figure out what.
Any help very much appreciated.

Thanks Martin