Why can't we do multiple language challenge in the mobile app?

Question

We should have the possibility to do challenge in multiple language, like HTML+Java Script or else.

Answer 1

actually i imagined something to chose 1,2 or more language and if you challenge someone that only learn one of them then you have a standard 1 language challenge but if the other learn multiples you may have questions from differents language.

Answer 2

It's not possible I think because if someone only learned HTML untill now, how he is answer for challenge questions?