Program to add node / delete node in the tree control via abap object

Hi all,

i am new to abap objects.

Can anyone help me out to give program about add node , delete node at

a particular point in tree hierarchy.

folder1 -- level 1

• subfolder1 -- level 2

*********subfolder1 -- level 3

*********subfolder2 -- level 3

• subfolder2 -- level 2

folder2 -- level 1

if i select level3 and click on ADD button .....i get a facility to add new node

at level 3 and and same thing can happen at level1 and level2 ............ if i select

and folder at level3 and click on delete button ....it should delete that folder...

if you do not have such program ........then guide me how to achieve this target via object oriented because i have to split the screen also and have to show some alve display in that.

just guide me how to add and delete node at a particular level in tree structure....

thanks in advance........