List Item problem

I was doing the Offset and scale tut http://digitaltoolbox.info/grasshopper-intermediate/offset-scale/

At about 3:00 min in where he uses list item to separate the lines, this did not work on my version of gh. I assume this is due to changes in the updated version I have. 

I tried playing around with series and splitting the data so that it is 0,1,2, but could only separate a list of the lengths of the lines.

If it helps, the first comment on the video explains what to do to fix it,

"-after Brep Components, I put the 3 items indexing 0,1, and 2 respectively.
-then I put in the offset, the evaluate length and scale as per the tutorial.
-after that, use the end point function to get all the endpoint from the scaled lines.
-then, for each start point and end point: list length then use the subset (with series asnd domain) to divide the list of data into 0,1,2, 0, 1, 2…..
- then, I can use the item to seperate out the 0, 1, 2, list as per the tutorial.
- after that, the rest follow as what is in the tutorial."

I guess I clearly don't understand series/domain and subsets yet since I can't figure out that part.

any help is appreciated thanks

Offset%20and%20Scale.gh

Offset%20and%20Scale.3dm