Can't graph ALVARION equipement

[raphtacool]

Hi,
I'm using cacti for 2 months, to manage equipements for my society (french provider). Everythings goes well, but I have some problemes with graphing traffic for a Wireless base station.
As you can see in the atached file, the traffic data query doesn't work.
I have tried to make this myself with the OID corresponding to "ifOutOctet" which return me the octet's number sending in outband.
In my data template i use the "COUNTER" Data Source Type because it's a continuously incrementing number.

I dont know why I haven't result.

If anyone can help me, please answer me at Raphael.Grenier@altitudetelecom.fr

Thank you