Hey, one problem in the top branch is that you override the existing Map entry with a new value, you are not adding the items together. The ADD node will override existing entrys when they already there.
The branch in the top does the exact same as the branch in the middle (you find the name in the map and then get back the name from it, you can just use the name you have in the beginning, it will be the same).
Regards,
SYN