How to select a row in a datagrid

public void run()
{
    inventJournalTable inventJournalTablefind;
    super();
   
    if(element.args())
    {
        if(element.args().parm())
        {
            select firstonly inventJournalTablefind where inventJournalTablefind.recId == str2int64(element.args().parm());
            InventjournalTable_ds.findRecord(inventJournalTablefind);
        }
    }   
   
}