Customizing Map data structure in BP

I know that BP is equipped with Map structure.
I’m more concerned about the second argument since seems to be not possible to craft that in a complete way.

130953-vars.png

So, is it possible to set the second argument as array?
At least this is possible in C++ coding into UE4, right?
Any suggestions?
Thanks!

Create a structure that hold an array then replace your integer with the new structure you create.

hope it help.