Conecting with an AP Options

[ainvar]

Hi, I'm trying to modificate ap_search example (from devkitpro lastest version) to use my NDS with a wep key without using a game. The code works if I don't use wep so my problem is about setting wep parameters in the wifi_ConnectAP function, till now I have tried with

unsigned char *key ="0000000000"; //My WEPkey
Wifi_ConnectAP(ap,WEPMODE_40BIT,0,&key);

Does anyone know where is the problem?
How do wep parameters have to be set?