Tile Grid Editable Item

Hi I am Using SmartGWT

I have tile Grid. On each Tile I do have Form with Text Item.

I am trying to set Text Item in canvas as follows
TextItem textItem = new TextItem();

canvas.setAutoChildProperties("TEXT1Child",textIte m);

But while trying to get using tile.getFormItemAutoChild("TEXT1Child") it is throwing exception.


Please let me know where I am going wrong.