how to code a label object to stay on top of another label?

#property strict
#property indicator_chart_window
//--- description
//--- input parameters of the script
input string            InpName="Label";         // Label name
input int               InpX=150;                // X-axis distance
input int               InpY=0;                // Y-axis distance
input string            InpFont="Arial";         // Font
input int               InpFontSize=14;          // Font size
input color             InpColor=clrRed;         // Color
input double            InpAngle=0.0;            // Slope angle in degrees
input ENUM_BASE_CORNER  Incorner=CORNER_LEFT_LOWER; // chart corner for anchoring
input ENUM_ANCHOR_POINT InpAnchor=ANCHOR_LEFT_LOWER; // Anchor type
input bool              InpBack=false;           // Background object
input bool              InpSelection=false;       // Highlight to move
input bool              InpHidden=false;          // Hidden in the object list
input long              InpZOrder=0;             // Priority for mouse click
extern string           words ="SOME TEXT";
//+------------------------------------------------------------------+
int OnInit()
  {
   EventSetTimer(1);
   return(INIT_SUCCEEDED);
  }
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const datetime& time[],
                const double& open[],
                const double& high[],
                const double& low[],
                const double& close[],
                const long& tick_volume[],
                const long& volume[],
                const int& spread[])
  {
  
   return(rates_total);
  }
  void OnDeinit(const int reason)
    {
     if (reason!=REASON_CHARTCHANGE)   ObjectDelete(InpName);
    }
void OnTimer()
 {
//--- store the label's coordinates in the local variables
   int x=InpX;
   int y=InpY;
//--- create a text label on the chart
if (ObjectFind(InpName) == -1)
   {LabelCreate(0,InpName,0,x,y,Incorner,words,InpFont,InpFontSize,InpColor,InpAngle,InpAnchor,InpBack,InpSelection,InpHidden,InpZOrder);}
 }
//+------------------------------------------------------------------+    
bool LabelCreate(const long              chart_ID=0,               // chart's ID
                 const string            name="Label",             // label name
                 const int               sub_window=0,             // subwindow index
                 const int               x=0,                      // X coordinate
                 const int               y=0,                      // Y coordinate
                 const ENUM_BASE_CORNER  corner=CORNER_LEFT_UPPER, // chart corner for anchoring
                 const string            text="Label",             // text
                 const string            font="Arial",             // font
                 const int               font_size=10,             // font size
                 const color             clr=clrRed,               // color
                 const double            angle=0.0,                // text slope
                 const ENUM_ANCHOR_POINT anchor=ANCHOR_LEFT_UPPER, // anchor type
                 const bool              back=false,               // in the background
                 const bool              selection=false,          // highlight to move
                 const bool              hidden=true,              // hidden in the object list
                 const long              z_order=0)                // priority for mouse click
  {
//--- reset the error value
   ResetLastError();
//--- create a text label
   if(!ObjectCreate(chart_ID,name,OBJ_LABEL,sub_window,0,0)) //OBJPROP_BGCOLOR
     {
      Print(__FUNCTION__,
            ": failed to create text label! Error code = ",GetLastError());
      return(false);
     }
//--- set label coordinates
   ObjectSetInteger(chart_ID,name,OBJPROP_XDISTANCE,x);
   ObjectSetInteger(chart_ID,name,OBJPROP_YDISTANCE,y);
//--- set the chart's corner, relative to which point coordinates are defined
   ObjectSetInteger(chart_ID,name,OBJPROP_CORNER,corner);
//--- set the text
   ObjectSetString(chart_ID,name,OBJPROP_TEXT,text);
//--- set text font
   ObjectSetString(chart_ID,name,OBJPROP_FONT,font);
//--- set font size
   ObjectSetInteger(chart_ID,name,OBJPROP_FONTSIZE,font_size);
//--- set the slope angle of the text
   ObjectSetDouble(chart_ID,name,OBJPROP_ANGLE,angle);
//--- set anchor type
   ObjectSetInteger(chart_ID,name,OBJPROP_ANCHOR,anchor);
//--- set color
   ObjectSetInteger(chart_ID,name,OBJPROP_COLOR,clr);
//--- display in the foreground (false) or background (true)
   ObjectSetInteger(chart_ID,name,OBJPROP_BACK,back);
//--- enable (true) or disable (false) the mode of moving the label by mouse
   ObjectSetInteger(chart_ID,name,OBJPROP_SELECTABLE,selection);
   ObjectSetInteger(chart_ID,name,OBJPROP_SELECTED,selection);
//--- hide (true) or display (false) graphical object name in the object list
   ObjectSetInteger(chart_ID,name,OBJPROP_HIDDEN,hidden);
//--- set the priority for receiving the event of a mouse click in the chart
   ObjectSetInteger(chart_ID,name,OBJPROP_ZORDER,z_order);
//--- successful execution
   return(true);
  }

Quoting sakisf

Disliked

OBJPROP_BACK, true the first item you dont care for, OBJPROP_BACK, false the item you want always in foreground.

Ignored

Quoting aPhong

Disliked

{quote} Thank you for your comment! I already know that & that is not what I want to do! :/ What I want is 1. my label object always stay on some another labels which may belong to other ex4.indicators? 2.to kown the rules/functions... for priority displaying (label)objects on chart? have a good day friend!

Ignored

//EXPERT
#property strict
#include <Controls\Dialog.mqh>
#include <Controls\Label.mqh>
 
class LabelWindow : public CAppDialog
{
   CLabel m_label;
public:
   bool Create(){
      return (
         CAppDialog::Create(0, "Label Window", 0, 10, 10, 200, 100)
         && m_label.Create(m_chart_id, m_name+"_label", m_subwin, 10, 5, 0, 0)
         && m_label.Text("TEST LABEL")
         && m_label.FontSize(20)
         && m_label.Color(clrRed)
         && this.Add(m_label)
      );
   }
};
LabelWindow app;
int OnInit()
{
   if(!app.Create() || !app.Run())
      return INIT_FAILED;  
   return(INIT_SUCCEEDED);
}
void OnTick(){}
void OnChartEvent(const int id,
                  const long &lparam,
                  const double &dparam,
                  const string &sparam)
{
   app.OnEvent(id, lparam, dparam, sparam);
}
void OnDeinit(const int reason)
{
   app.Destroy(reason);
}