Need to add two custom column in standard web dynpr component and retrieve the data from data base

Hi All,

we have requirement to add two custom column to standared WD DPR_TABLE and the view in front end is recurisive tree structure.( we have following requirments.

1. inital value for the two fields need to retrieve from the database tables. we are able to retrieve the data through function module but not able to set the value to attrinute since it is in tree structure (one parent node, one or more child node, child node can have one or more subnode)

2. If user change the value or update the value for the fields, values needs to be updated in database. How to find the index value for the updated fieds.

Please help me and share your ideas. Let me know if you need any information