//Go to http://www.pushingbox.com/scenarios.php and find the DeviceID you want to trigger, then insert it here
string devID = "xxxxxxxxxxxxxxxx";

//Key used to identify HTTP request
key requestID;

default
{
    state_entry()
    {
        //Call the url and store the HTTP request id
        requestID = llHTTPRequest("http://api.pushingbox.com/pushingbox?devid=" + devID, [], "");
    }

    http_response(key id, integer status, list metadata, string body)
    {
        //Check if it is the ID we are expecting
        if (id == requestID)
        {
            //If returned status is 200, the script successfully contacted the server
            if (status == 200)
            {
                llOwnerSay("Success!");
            }
            else
            {
                llOwnerSay("An error occured: " + body);
            }
        }
    }
}