As3 Datagrid Checkbox Multisel

I need some code developed for a flash project I am working on. This needs to be as3 I need to use the flash components datagrid and checkbox . I need a datagrid with two columns one is a a text/string column. the second column is a check box. I need to be able to check multiple items. and have a item selected but not check, have multible items checked. I have some code already written but its not working correct. the code currently only ...