g5 770 proximity sensor problems

Hi, guys My Alarm is a Clifford Intelliguard 770, with all the sensors that the alarm has from factory plus a proximity sensor.. The proximity sensor is located in the middle console of my car, and I dont know why it s not working well I mean, I have all the sensitivity to the max and even thought you can pass like 10 times around my car and only 2 or 3 times it make a sound... is there any way to troubleshoot this problem?English is my second lenguage so do not look at my gramar ;)

Does the proximity sensor has to go in a certain position???? Does it has to point is some direction or something??English is my second lenguage so do not look at my gramar ;)

Mount it in the roof lining facing down, also I believe the G5 alarms have to be programmed to recognise the proximity sensor if it's the Clifford unit rather than a 508d.