Form and Sub_report

[Luka2013]

I have created a table called Stock(item_id, item_name, item_price). Then I created a form called StockFrm. I created a Blank report(Report1), where I placed a List box. I placed the report onto the form so that it is a sub-report. Now I want to click a button and transfer whatever is in item_name at that moment and make a copy of that item_name in the Listbox. Is there such a command?