Trouble with List item

Hi guys!! Does anybody know what can I do in order to select the volumes like in the screenshot? I tried with list item and it doesn´t work, yet I believe it is due to the tree structure. How can I reorganize it so that I can get the yellow volumes (like in the screenshot). Thank you!!

list (180.6 KB)

list item (183.4 KB)

Those yellow volumes are the last three members of each branch. Therefore, connecting index numbers of them -which are 25, 26 and 27- to the List Item component would be the solution in this case.

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Thank you both!