Area Warning[1.12.2] v1.0

//Area data list
var lpl = [
    {
        //Regional location (p1 must be smaller than p2)
        p1:{x:0, y:0, z:0},
        p2:{x:10, y:10, z:10},
        //Enter
        enterMsg:{
            title: "Enter Danger Area",
            subtitle: "Be careful",
            actionbar: "Enter Area: Danger area",
            message: "You have been enter danger area, be careful.",
            notificationTitle: "Entering Danger Area",
            notificationSubtitle: "Do you feel fear?"
        },
        //Leave
        leaveMsg:{
            title: "Leave Danger Area",
            actionbar: "Leave Area: Danger area",
            message: "You were leaving danger area.",
            notificationTitle: "Leaving Danger Area"
        }
    }
];

//Clear data when player exit the game, so can log in and display again next time.
function logout(e){
    var pt = e.player.tempdata;
    if(pt.has("lp")) pt.remove("lp");
}

function tick(e){
    var p = e.player;
    var pt = p.tempdata;
    if(!pt.has("lp")) pt.put("lp", new Array());
    for(var i in lpl){
        var msg = null;
        var tc = pt.get("lp");
        var tq = tc.indexOf(i);
        if( (lpl[i].p1.x<p.x && p.x<lpl[i].p2.x) && (lpl[i].p1.y<p.y && p.y<lpl[i].p2.y) && (lpl[i].p1.z<p.z && p.z<lpl[i].p2.z) ){
            if(tq==-1){
                var msg = lpl[i].enterMsg;
                tc.push(i);
                pt.put("lp", tc);

            }
        }else{
            if(tq!=-1){
                var msg = lpl[i].leaveMsg;
                tc.splice(tq,1);
                pt.put("lp", tc);
            }
        }
        if(msg!=null){
            if(msg.title!=null) {
                e.API.executeCommand(p.world, "/title " + p.displayName + " title {\"text\":\"" + msg.title + "\"}");
                e.API.executeCommand(p.world, "/title " + p.displayName + " subtitle {\"text\":\"" + ((msg.subtitle!=null)?msg.subtitle:"") + "\"}");
            }
            if(msg.actionbar!=null) e.API.executeCommand(p.world, "/title " + p.displayName + " actionbar {\"text\":\"" + msg.actionbar + "\"}");
            if(msg.message!=null) p.message(msg.message);
            if(msg.notificationTitle!=null) p.sendNotification(msg.notificationTitle, ((msg.notificationSubtitle!=null)?msg.notificationSubtitle:""), 2);
        }
    }
}