In-Game Hostname Changer [V1.0]

#include <a_samp>
#include <zcmd>

#define DIALOG_FIRST 1
#define DIALOG_SECOND 2

CMD:activatename(playerid,params[])
{
	if(IsPlayerAdmin(playerid))
	{
		ShowPlayerDialog(playerid,DIALOG_FIRST,DIALOG_STYLE_MSGBOX,"{FF0000}Activate","Hello, and Welcome to {15FF00}HY {FF0000}Hostname {FFFF00}Changer\n\n{FFFFFF}Are you sure you want to change your server's name ?\n\nIf {15FF00}Yes {FFFFFF}, write {FF0000}/CHostname {FFFFFF},else click {15FF00}Exit {FFFFFF}!","","Exit");
	}
	else
	{
		SendClientMessage(playerid,-1, "{FF0000}ERROR: {15FF00}This command can be used only by {FF0000}RCON {15FF00}!");
	}
	return 1;
}

CMD:chostname(playerid,params[])
{
    if(IsPlayerAdmin(playerid))
	{
		ShowPlayerDialog(playerid,DIALOG_SECOND,DIALOG_STYLE_MSGBOX,"{FF0000}Succesfully","You have {15FF00}succesfully {FFFFFF}changed your hostname with {FF0000}HY's {FFFF00}Hostname {0066CC}Changer\n\n{FFFFFF}Thanks because you used this {FF0000}Filescript {FFFFFF}!","Exit","");
        SetTimer("Changer", 3000, true);
        SendClientMessage(playerid,-1, "{FF0000}You have succesfully changed your {15FF00}Server's Name{FFFFFF} by using {FF0000}HY's Hostname Changer.");
		SendClientMessage(playerid,-1, "{FF0000}Please check if this {15FF00}REALLY WORKS !");
	}
	else
	{
        SendClientMessage(playerid,-1, "{FF0000}ERROR: {15FF00}This command can be used only by {FF0000}RCON {15FF00}!");
	}
	return 1;
}
public OnDialogResponse(playerid, dialogid, response, listitem, inputtext[])
{
	if(dialogid == DIALOG_FIRST)
	{
 		if(response)
	    {
            if(listitem == 0)
		    {
				SendClientMessage(playerid,-1, "{FF0000}You have succesfully changed your {15FF00}Server's Name{FFFFFF} by using {FF0000}HY's Hostname Changer.");
				SendClientMessage(playerid,-1, "{FF0000}Please check if this {15FF00}REALLY WORKS !");
                SetTimer("Changer", 3000, true);
			}
		}
	}
	return 0;
}

public OnGameModeInit()
{
    SetTimer("Changer", 3000, false);
}

forward Changer();

public Changer()
{
    new var = random(4);
    switch (var)
    {
        case 0: SendRconCommand("hostname » FIRST HOSTNAME « | • #1 •");
        case 1: SendRconCommand("hostname » SECOND HOSTNAME « | • #2 •");
        case 2: SendRconCommand("hostname » THIRD HOSTNAME « | • #3 •");
        case 3: SendRconCommand("hostname » FOURTH HOSTNAME « | • #4 •");
	}
}