How to integrate show on click into theorem environment?

Using

documentclass{article}
usepackage{ocgx}
begin{document}
noindent My theorem.
begin{ocg}{OCG 1}{ocg1}{0}
My proof.
end{ocg}
switchocg{ocg1}{fbox{Toggle proof}}
end{document}

we can create a button which toggles on and off text. I want to automate this within a theorem environment. Right now I’m using ntheorem with code like:

theoremstyle{changebreak} 
theoremseparator{.}
theorembodyfont{normalfont}
theoremheaderfont{bfseries}
newframedtheorem{thm}[sscount]{Theorem}

and ideally I want to keep with ntheorem.

Can anyone give some code that automatically creates a button which toggles the text of the environment begin{thm} TOGGABLE TEXT end{thm}?