AX 2012 unretreived in inventsum Form

Hi,

I need to Add the field InventDimId in the form (Inventory and warehouse management --> Common --> On-hand inventory).

I have added the field InventDimId from the InventSum table to the grid, but the column shows "Unretreived" in the cells.

I found another related post wich said to modify the method  queryAddSumFields from the table InventSum.

I did the following change by adding a new line:

  for (i = 1; i <= qbfl.fieldCount(); i++)
    {
        if (qbfl.fieldKind(i) == SelectionField::Sum)
        {
            fields.add(qbfl.field(i));
        }
    }

    // New line Added
    qbfl.addField(fieldNum(InventSum,inventDimId));

But I still have the "unretreive" notification in the cells of the grid.

Any idea if and how I can fix that ?

Thanks