I have developed the module till here : Displays a form and a table which takes input (built by form api)

To this table, I want to add rows when I click on button "ADD CHARACTERISTICS".
I should be able to add rows , as long as I use this button.

Also the form should not get submitted until I click the ADDTOTABLE .

For adding rows, is it possible to implement in the way  as in the link   below:
http://www.switchonthecode.com/tutorials/adding-dynamic-rows-to-flex-datagrid

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Pavithra M