Add Lua Function

[Eickhoff]

int32_t LuaScriptInterface::luaGetPlayerClientVersion(lua_State* L)
{
    //getPlayerClientVersion(cid)
    ScriptEnviroment* env = getEnv();
    Player* player = env->getPlayerByUID((uint32_t)popNumber(L));
    if(!player)
    {
        errorEx(getError(LUA_ERROR_PLAYER_NOT_FOUND));
        lua_pushboolean(L, false);
    }
    else
        lua_pushnumber(L, player->getClientVersion());

    return 1;
}

    //getPlayerClientVersion(cid)
    lua_register(m_luaState, "getPlayerClientVersion", LuaScriptInterface::luaGetPlayerClientVersion);

Hi Guys, look, I have this function it is for 0.3.6. ... But how can i add this in 0.4? :/
Please Help me D: