[Jstylezzz]

Ah, there you have the problem ;)
The CMD:something codes have to be placed outside any callback.

Example:

pawn Код:

#include <a_samp>
//your includes


public OnGameModeInit() //this is a callback
{

}

CMD:somecommand(playerid,params[])
{
//contents
}

public SomeOtherCallback()
{

}

As you can see, the CMD code is placed outside the callbacks, which means outside of any brackets ( '{' and '}')
I hope this clarified things a little :)