Table, How to get Geneated Column's value

Hi,

I generated column to OptionGroup or TextField for “BeanItem” .

When change column’s value and click save button,

Button Click Event.

Collection<?> items = table.getItemIds() ; for (Object item : items) { Property pVal = table.getContainerProperty(item, "value"); } Cannot get change pVal value ,
Just can get original value…