Get underlying data from a cell in TDBAdvGrid

VCL VCL Feature Requests
1

Provide a property for accessing the underlying field data information in a cell, with no care about what is displayed.

for example in dDBAdvGridCustomCellDraw:
if (ARow > 0) and (ACol = 3) then
begin
if ( dbadvgBase.Cells[ACol,ARow] = )
then ...do a specific action...
else ...do a specific action...;
end;

but... if I simply change the value in dDBAdvGridGetDisplText:
begin
if (ARow > 0) and (ACol = 3) then
begin
Value := '';
end;
end;

...in this case CustomCellDraw does not work due to change of cell DISPLAYED value.

I tried GridCells[ACol,ARow] but it is always empty, and OriginalCells[ACol,ARow] is the same as Cells[ACol,ARow]

thanks in advance, regards
Max