Whats the wrong?

    if (strcmp(cmdtext, "/uw", true)==0)
    {
    if(IsPlayerInAnyVehicle(playerid))
    {
    new VehicleID;
    GetPlayerPos(playerid, posx, posy, posz);
    GetVehiclePos(VehicleID, (posx), (posy), (posz));
    VehicleID = GetPlayerVehicleID(playerid);
    SetVehiclePos(VehicleID,-1718.3363,-630.8616,-20.1151);
    SendClientMessage(playerid, COLOR_LIGHTCYAN, "Welcome to the Underwater World!");
    SendClientMessage(playerid, COLOR_LIGHTCYAN, "Type /back to go back, there you teleported from!");
    } else {
    SetPlayerPos(playerid,-1718.3363,-630.8616,-20.1151);
    SendClientMessage(playerid, COLOR_LIGHTCYAN, "Welcome to the Underwater World!");
    SendClientMessage(playerid, COLOR_LIGHTCYAN, "Type /back to go back, there you teleported from!");
    return 1;
    }
    if (strcmp(cmdtext, "/back", true)==0)
    {
        new VehicleID;
        VehicleID = GetPlayerVehicleID(playerid);
     	SetVehiclePos(VehicleID, posx, posy, posz);
		SetPlayerPos(playerid,posx, posy, posz);
        SetPlayerFacingAngle(playerid, zangle);
		SendClientMessage(playerid, COLOR_GREEN, "Welcome Back!");
	    return 1;
    }
	return 0;
}