Anti AFK system (Bugged)

/*Declared New*/
new AFK_Timer[MAX_PLAYERS];
new AFK_Kick_S[MAX_PLAYERS];
new acstring[128];

/*Dialogs*/
#define DIALOG_AFK 11

/*Forwards*/
forward AFK_Kick(playerid);
forward AFK_Bye(playerid);

/*Publics*/
public AFK_Kick(playerid)
{
    ShowPlayerDialog(playerid, DIALOG_AFK, DIALOG_STYLE_MSGBOX, "Are you here ?", "This system is checking if you are AFK.\nYou will see this message if you are in-active for 1 minute.\nYou have 20 seconds to press the continue button.", "Continue", "");
    AFK_Timer[playerid] = SetTimer("AFK_Bye", 20000, false);
    return 1;
}

public AFK_Bye(playerid)
{
    format(acstring, sizeof(acstring), "{FF4500}[ANTI CHEAT]{EE0000} %s (%i){FF4500} has been kicked from server. Reason: AFK (Away From Keyboard)", GetName(playerid), playerid);
    SendClientMessageToAll(COLOR_ORANGE, acstring);
    SetTimer("AntiCheat", 100, false);
    return 1;
}

public OnDialogResponse(playerid, dialogid, response, listitem, inputtext[])
{
    if(dialogid == DIALOG_AFK)
    {
        if(response)
        {
            KillTimer(AFK_Timer[playerid]);
            KillTimer(AFK_Kick_S[playerid]);
        }
    }
    return 1;
}