[parent.parent.parent.parent]

[odifrepolm]

[parent.parent.parent.parent] is there a better way to reference objects at that instance?

top

sub1

   sub2

     sub3

[Jono_Moore]

You can use the name of the object you are trying to get to instead of using a string of "parents".

If you are looking for an index reference in your above sample, from sub3 you could just reference "top".