C++ helios input.json problem

Hey people!
So i have a problem, im trying to change a few blueprints that i installed into my engine.
Here i try to change so that i can get this blueprint with an ARRAY STRING INPUT!

This doesnt seem to work, since it only outputs and inputs an single string array.
Help? :stuck_out_tongue:
Thanks!

it doesnt work with anything

It seems as i will have to set up c++ code for an array? Or am i totally wrong?