integer chann = 34;
list avatars;
integer listenid;

default
{
    state_entry()
    {
//        llSensorRepeat("", NULL_KEY, AGENT, 10, PI, 5.0);
    }

    sensor( integer detected )
    {
        avatars = [];
        while(detected--)
        {
            avatars += [llDetectedName(detected)];
            avatars += [llGetSubString(llDetectedName(detected), 0, 23)];
        }
    }

    touch_start(integer total_number)
    {
        llSensor("", NULL_KEY, AGENT, 10, PI);
        llMessageLinked(LINK_ALL_OTHERS, 1, "attack", "");
        integer ListLength = llGetListLength(avatars);
         if (ListLength > 0) {
            listenid = llListen(chann, "", llGetOwner(), "");
            llDialog( llGetOwner(), "Avatars", ["Back"]+ llList2ListStrided(avatars, 1, -1, 2) + ["Next"], chann);
        } else  {
            //dialog no avi's found
        }
    }

    listen(integer channel, string name, key id, string message)
    {
        if (channel == chann) {
            llSay(0, "Listen heard '" + message + "'");
            llListenRemove(listenid);
        }
    }
}