Table BigDecimal column doesn't show numbers after comma

Hi,

I have a Table with a BigDecimal column

myTable.addContainerProperty("sum", BigDecimal.class,  null);

The problem is that if the value is lets say 100 it shows in the table as 100 but I need it to be 100.00

Changing BigDecimal.class to String.class is not an option because table must be sortable by this BigDecimal column.

Thanks for any help!

EDIT:
Here
is answer for my own question.