How to create a F4 help on table input field in Webdynopro ABAP?

Hi Experts

I have a ABP Webdynpro where i am displaying a table for input data. The table has only one column.

The user can add rows and delete rows as well.

Now I want to create a F4 help on this table column cell.

I have created a programmable F4 help component usage. I followed all the steps as in FREE_VALUE_HELP.

In the context of the table cell i have selected the input help mode as Freely programmed.

However when I test my application i don't see f4 icon, which i see when i use a independent input field in the same view. What else i need to do to get the F4 help icon in a table field? Pls help ASAP!

Thanks

Gopal