Why cant I Set/Update a MAP variable in Construction script?

Ty for the Add node confirmation. So I was able to test.

Correct, the pic isnt my full Function. It is 70% bigger, so I only showed the needed parts to make discussion easier.

  1. I could not confirm the above prior, because I didnt know how to Watch Vars > display live values changed by Construct Script (since I cant press Play to start Debug mode and fire CS?)
  2. And the Right panel was not updating the values of my Map (in Editor).
  3. So I right clicked on the text of the Map var > watch. And I added a node as a breakpoint. Thus I could Play the game (in a new window) while seeing the Editor Graph in another.
  • Now the Editor did show a popup display of the live Map values - to prove that CS updated them (CS code worked) before I pressed Play (to confirm).
  1. (And later I found out how to Print Map values.)

  2. #3 and 4 proved that UE4.27 is not updating the Right panel > values of Map while in Editor. Why is this?