I’m looking for a answere on this to! 
@Nodes_Of_Nature I am looking for the same answer. did you figure it out?
Get Actor Data with Parse Actor Component might yield to a Volume Data. Volume data is then collapsed to points, meaning you have now a sampled volume with a lot of points.
You can change the mode in Get Actor Data to “Get Single Point”
You can’t unfortunately. If you need the index, use Iteration loop.
Arrays are not supported yet, but will be supported in 5.4. But you can provide your custom structure using other methods in BP. But you won’t be able to pass it from PCG.
As for a Branch, you can combine the Select node to select an attribute that is a path to your subgraph, and use it as an override in the Subgraph node: “Subgraph override”
If you want to branch, have you tried the “Branch” node? 
It was made avaialble in 5.3
Yes there is a setting for that in Editor Preferences/PCG.
Thank you!!!
Since this series is titled as 5.3-specific, yet chapters are clearly marked as 5.2-specific, it would be great if you could point out where instructions have changed for 5.3. It’s frustrating to watch a long video and then find that key bits are now done differently, turning 30 minute tutorials into muli-hour “where did that feature go” hunts. It’s okay to have 5.2 content still up but mixing it like this makes it hard to find truly concise and accurate instruction