AIR shared object

[peem83]

Hi,
Im working on AIR shared whiteboard in flash. When I draw lines data is send do share object but when I run it one more time not all objects are display on the whiteboard and sometimes I got error:
RangeError: Error #2006: The supplied index is out of bounds.

function to read data from shared object:
public function syncEventHandler (event:SyncEvent) {
var list = event.changeList;
for (var i = 0; i<list.length; i++) {
if (list[i].name == null) continue;
trace(list[i].name);
if (list[i].code == "delete") {
this.dragTarget.removeChild(this.dragTarget.getChi ldByName(list[i].name));
} else {
var child = this.dragTarget.getChildByName(list[i].name);
if (child)
child.updateSharedObject(this.so);
else
this.addNewChild(this.so.data[list[i].name], list[i].name);
}
}
}

and function addNewChild:

function addNewChild(data, name) {
var child = null;
switch(data.toolType) {
case "brush": child = new ScrappyBrush();
break;
case "arrow":
child = new ScrappyLine();
break;
case "text":
child = new ScrappyTxt();
break;
case "textBox":
child = new ScrappyTxtBox();
break;
case "circle":
child = new ScrappyCircle();
break;
}
if (child) {
child.name = name;
dragTarget.addChild(child);
child.updateSharedObject(this.so);
}
}

Any idea what is wrong.... ?