call bean method where sortby column change

[vviana]

hi,

i use dataTable in my page. In this dataTable, i have a column where the value need change always the sort by change. but, i dont know how makes for the value column be recalculated when the order change.

i need know if exist on way to get the "sortby event" of column and call method bean for render the table.

thank's for help.