setRendererStyle() -> 3rd Parameter don't work

Hello,
i am trying to get more information about the third parameter of the setRendererStyle()-Method:

public function setRendererStyle(name:String, style:Object, column:uint = 0):void

I thought i can format my DataGrid-Coloums with several TextFormat-Instances, like:


dataGrid.setRendererStyle("textFormat", tfOne,0);
dataGrid.setRendererStyle("textFormat", tfTwo, 1);
dataGrid.setRendererStyle("textFormat", tfSomething, 2);

dont’t work

Can you post Example’s to format the DataGrid-Columbs with more then one TextFormat-Instances ?

Thank for reading, please help me…
Thomas