Is it possible to change the "jump" positive button during runtime?

Following a previous question where I learned that the input dialog was only available for standalone builds, I wonder now how can input can be changed at runtime since their seems to be no setter available.

the jump button is just an example, what I would like is retain the user ability to edit inputs interface and the power of the input manager instead of cluttering the code with having to reinvent the input manager...

any advice much appreciated.

Thanks,

Jean.