Tooltip in htmlb:tree for nodes using table attribute

Hi,

I am creating a tree using htmlb:tree tag, but by providing a table to read the nodes of the tree. For each node of type TVIEWNODE i am providing the tooltip in its tooltip element. However, i am unable to see the tooltip in the browser. the html code also does not contain the tooltip.

Am i missing something or this functionality doesn't work.

Thanks,

Ghufran