GPRS / connection to / client / publish

Hi smart makers,
I plugged a load cell and a GPRS shield in an arduino.
In the sketch I connect to GPRS in the setup section.
In the loop section I get the sensor data and the I want to publish it on

How do I push the data to

  • how do I tell that I want to send data to ?
  • how do i tell that i want to push data to my device (which function to push data ?)

it seems that I dont need any library about GPRS as my connection to my apn is already done.

Do I need a library to publish ( a client ?)

Best to all.