list choices = ["Accept"];
string msg = "You have been infected! Become a Zombie?";

integer channel_dialog;
integer dlgHandle = -1;

list avatarList = [];
list keyList = [];
key keyvar;


reset()
{
    llSetTimerEvent(0.0);
    llListenRemove(dlgHandle);
    dlgHandle = -1;
}

default
{
    touch_start(integer total_number)
    {
        llOwnerSay("Scanning...");
        avatarList = [];
        // Look for any avatars within 10m.
        llSensor("", NULL_KEY, AGENT, 96.0, PI);
    }
    sensor(integer num_detected)
    {
        integer i;
        while((i < num_detected) && (i < 9))
        {
            if (llDetectedKey(i) != llGetOwner())
            {
                avatarList += [llDetectedName(i)];
                keyList += [llDetectedKey(i)];
            }
            ++i;
        }
        if (llGetListLength(avatarList) > 0)
        {
          state select;
        }
    }
}

state select
{
    state_entry()
    {
        channel_dialog = ( -1 * (integer)("0x"+llGetSubString((string)llGetKey(),-5,-1)) );

        // Set up a listener to detect button clicks.
        dlgHandle = llListen(channel_dialog, "", llGetOwner(), "");

        // Start a new timer.
        llSetTimerEvent(30.0);

        // Add a 'Cancel' button.
        avatarList += ["Cancel"];

        // Display the dialog.
        llDialog(llGetOwner(), "Please select an avatar.", avatarList, channel_dialog);
    }

    listen(integer channel, string name, key id, string message)
    {
        if ((channel == channel_dialog) && (llListFindList(avatarList, [message]) != -1))
        {
            if (message != "Cancel")
            {
                integer count;
                count=llGetListLength(keyList);


                while(count>=0)
                {

                    if(llList2String(avatarList,count)==message)
                    {

                        keyvar=llList2Key(keyList,count);

                        llListenRemove(dlgHandle);
                        dlgHandle = llListen(channel_dialog, "", keyvar, "");

                        //Syntax error on listen
                        listen(integer channel, string name, key id, string message
                        {
                            llDialog(keyvar, msg, choices, channel_dialog);
                            if(message=="Accept")
                            {
                                llSay(0,"ACCEPTEDDDDDOMFGF"); //Is not displayed
                            }
                        }

                    }
                    --count;
                }

            }
            reset();
            state default;
        }
    }
}