Grids onCreate() vs. Labels onCreate()

Hi,

using Birt 2.6.2 I want with a Javascript, manually set data in a grid element outside onPrepare().

During the onCreate() of a Label I can change the value easily

this.text = myVar;

During the onCreate() of a Grid I can't change the value of that Label.

var factory = reportContext.getReportRunnable().designHandle.getElementFactory();
var grid = reportContext.getDesignHandle().findElement("MyGrid");

for (var i = 0; i < myRows;i++) {
  row = grid.getRows().get(i);        //RowHandle
  cell1 = row.getCells().get(1);      //CellHandle
  slot1 = cell1.getContent();         //SlotHandle
  lbl1  = slot1.getContents()         //LabelHandle Array?
  deh1 = slot1.get(0);                //LabelHandle DesignElementHandle
  
  deh1.getText(); // Gets the initial value. Works!
  deh1.setText("MY NEW VALUE");
  deh1.getText(); // Gets the new value. Works!

  logToDebugWindow(i + " : " + deh1.getText() ); // Shows the new value in a debug window

 );

But in the report I only see the initial text, set during onPrepare()
and not "MY NEW VALUE" set during onCreate().


Why is the changing of a label text only working in the onCreate of the Label and not in the onCreate of its Grid ?

regards
germobirt