[flexcoders] advanceddatagrid itemrenderer refering current column's data

[hworke]

  Hi, in a advanceddatagrid I need to put same
  background color if the the cell value is
  not empty string. In the itemrenderer all I
  need to check is if the current column value
  is null or not. I know how to refer a value
  of the data object in the itemrenderer like:
  data.whateverParameter. But in this case I
  need to refer the current column value not
  a fixed parameter of the data object. How do
  I refer to the current column vale in the
  itemrenderer?