Hello Abhishek,
As I mentioned before you need to assign the req. values from the select record first to a data structure.
This asignment must be executed whenever a line in the OWL is selected. This means on the change of the lead selection.
You can achieve this by adding an event handler to the DataModel of your "Root/DataList" like in my example. Here the name of the list is "Root/NodeNames" and the event handler is name "SelectNodeNameFromHierarchy":
This event handler shall assign the req. elements from the selected record to a new structure.
In my example it is only one element named "Name":
Now you can use this new structure in the first DataOperation of your event handler starting the ListModificationStructure (as you can see above)
HTH,
Horst