Debugging a compiled .dol with USB Gecko

[γRB]

I just compiled a C code to test on Wii, which worked fine, so I tried to debug it by making a WAD to load through Gecko OS [With hooks], but it did not work. What else can I do to make it work?
Edit: Trying to use the following:
#include <debug.h>

DEBUG_Init(GDBSTUB_DEVICE_USB, 1);