3 Sprites are not stamping properly

[eminfedar]

Hi everyone!
I'm trying to use sprite.stamp(); but I have some problems.
I have one main sprite and I wanna add sprites to behind of it and in front of it. [like burger]

While just 2 sprites (for example just main and front sprites) stamp works nice, but when I stamp 3 sprites it just adding all sprites I have used before for stamping.

This is example code:

package;
import flixel.FlxSprite;

class  
{
	public function new() 
	{
		var listspr:Map<Int,Dynamic> = [
			0 => { img:"sprite1.png" },
			1 => { img:"sprite2.png" },
			2 => { img:"sprite3.png" },
                        3 => { img:"sprite4.png" },
                        4 => { img:"sprite5.png" },
		];
		
		var backSprite:FlxSprite = new FlxSprite(0, 0, "assets/images/backimage.png", false, 0, 0, true); // unique true
		var frontSprite:FlxSprite = new FlxSprite(0, 0, "assets/images/frontimage.png", false, 0, 0, true); // unique true
		
		for ( i in listspr ) {			
                        var obj = listspr[i];
                        var temp_path = obj.img;
                       
                        var middleimage:FlxSprite = new FlxSprite();
                        middleimage.loadGraphic("assets/images/" + temp_path, false, 0, 0, true); // unique true			

			obj.img = new FlxSprite();
			obj.img.loadGraphicFromSprite(backSprite);
			obj.img.stamp( middleimage );
			obj.img.stamp( frontSprite );
			
			add( obj.img );
		}
		
	}
	
}

How can I fix it? Thanks!

[eminfedar]

SOLVED

Use :

obj.img.loadGraphicFromSprite(backSprite); // WRONG BECAUSE NOT UNIQUE, JUST COPY GRAPHIC DATA

Instead of :

obj.img.loadGraphic("assets/images/backimage.png", false, 0, 0, true); // RIGHT BECAUSE OBJECT IS UNIQUE ITSELF

[Brandon R]

@eminfedar wouldn't just setting unique=false work in this case?:
obj.img.loadGraphic("assets/images/backimage.png", false, 0, 0, false);

[eminfedar]

@Brandon-R No because of Flixel's cache system, it's not working :)