If you are still looking for ways to do this, or if someone else ends up finding this post here is some information:
There doesn't seem to be any way to do this out of the box using Infotables, which is unfortunate.
However you can do it using JSON (and that also enables some things you can do with the "rows" array of your infotable).
MSSQL has some JSON functions you can use.
Here is a link to the Microsoft website explaining the use of it.