Dynamic getmembers from a datasource

    Hi evryone,

I have the following code. i want to get number of members from dimension1 filter by dim_filter so this way the nº of member are dynamic based on the filter. i always get the same nº of member wich is the total without filters

DS_1.setFilter("dim_filter", DROPDOWN_1.getSelectedValue());

DS_1. reloadData();

var seleccion = DS_1.getMembers("dimension1", 100);

seleccion.length