AHK: Использование переменных внутри классов

#SingleInstance Force 
#NoEnv 
OnMessage(0x201, "WM_LBUTTONDOWN")

Gui, +HWNDhMain -DPIScale
Gui, Color, F9D886
Gui, Show, w420 h420

Gui, New
Gui, +HWNDhChild -DPIScale -Caption +0x40000000 -0x80000000  ; Add WS_CHILD, remove WS_POPUP
Gui, Color, FF0000
Gui, Add, Text, , Пермещай мышкой 
Gui, Add, Progress, y+10 h66 w100 Background178D00, 50
Gui, Add, Text, , Пермещай мышкой 
Gui, +Parent%hMain%
Gui, Show, NA AutoSize x1 y1
Return

WM_LBUTTONDOWN() {
	Global 
	If (hChild = A_Gui)
		PostMessage, 0xA1, 2,,,ahk_id %hChild%
}

+AlwaysOnTop +E0x08000000

+0x40000000 -0x80000000

Add WS_CHILD, remove WS_POPUP

gui, add, text, x%x2% y%y2% vTx, text 

class Tank {
  x := 400
  y := 300
  Lica := 0
  Pr1 := 0
  Tx := 0
  paint()
  {
    x:=this.x
    y:=this.y    
    Gui, Add, Picture, w100 h-1 x%x% y%y%, C:\Users\vic\Pictures\Tank.emf
    x2:=x+35
    y2:=y+70
    gui, add, text, x%x2% y%y2% vTx, text
    x1:=x+80
    y1:=y+10
    gui, add, Progress,Border w10 h150 x%x1% y%y1% vertical cBlue vPr1
   }
}

MyTank := new Tank
MyTank.paint()
Loop  {
   Sleep, 10
   GuiControl,, % MyTank.Pr1, % A_Index
}

class Tank  {
   x := 10, y := 10
   paint()  {
      x1 := this.x + 80
      y1 := this.y + 10
      Gui, Add, Progress, Border w10 h150 x%x1% y%y1% vertical cBlue hwndPr1
      this.Pr1 := Pr1
      Gui, Show
   }
}

MyTank := new Tank("MyTank")
MyTank.paint()

class Tank  {
   x := 10, y := 10
   __new(name)  {
     this.name := name
   }
   paint()  {
      MsgBox % this.name
   }
}

MyTank.name := "MyTank"

MyTank := new Tank
MyTank.paint(10,10)

class Tank  {
   paint(x,y)  {
      Gui, Add, Button, Border x%x1% y%y1% gTEST hwndPr1, Button
      this.Pr1 := Pr1
      Gui, Show
   }
TEST() {
MsgBox Вызов из тела объекта
}
}