How to get value of column selectFilter with deprecated react-boot-strap-table

Hi all,
I use react-bootstrap-table (the deprecated one because of the react version of my application).
I use column filter of SelectFilter type and i would like to know how to get the value selected in the combobox.
In this version OnFilter does not work.
I have tried to seek the value in the TableHeaderColum props there but i haven't see nothing which can tell me this value.
I just would like to know if the combobox is empty or with a filter to change an icon.
I just need to test the value of this combobox.

thank you in advance