myRectangle[i]=b.rect(); myCircle[index1].itemLayer = allLayers[index2]; 

if(i==USERINPUT_numberStrokes){ //the last/largest ellipse must be filled 
                  b.fill(0,0,0,0); //white color for the last ellipse 
                  b.beginShape(b.CLOSE); 
                  var radius = 200; 
                  var degree = 120; 
                  var magicNumber = 30; // to turn the triangle upwards 
                  var trianglePoints = []; 
                  for (var j = 0; j < 3; j++) { 
                    var x = (b.cos(b.radians(degree * j + magicNumber)) * scaleCircle*i) + points[c][0];  
                    var y = (b.sin(b.radians(degree * j + magicNumber)) * scaleCircle*i) + points[c][1]; 
                    trianglePoints.push([x, y]); 
                    b.vertex(x, y); 
                  } 
                  b.endShape();   
... 
} 
              } 

myRectangle.itemLayer = app.documents[0].layers.itemByName("Meine Ebene"); 

myRectangle.itemLayer = app.documents[0].layers[0]; 

var myTriangle = b.endShape(); 

myTriangle.itemLayer = allLayers[index2];