adafruit fona cellular tracker problem

recently started using adafruit fona and arduino uno. I have been able to modify the demo code and post dht11 sensor data and battery info to ubidots website.I can even print latitude and longitude values to the serial monitor but i am unable to upload this data (latitude, longitude) to the ubidots website. I have attached the arduino sketch.

Thanks in advance

fona_ubidots.ino (7.8 KB)