Help Regarding Hirarchial ALVs

Hi Friends,

Right Now, I am working with the Function-module, REUSE_ALV_HIERSEQ_LIST_DISPLAY, Which Displays the Service order data such as AUFNR, Auart, werks, erdat, ernam etc.I am Also displaying the Check box, so that once the data is diplayed in the List, I can select the Service order and can Move to IW32 for Service order change.

Could anyabody help how to captuer the record which is checked by the user in List?

Which parameter value passes the value of Checkox ' X' ?

Kindly, provide if any sample code is available.

Thanks,

Xavier