From JSON database use string for dimens?

Question

I am utilizing a JSON database.

 

In it, I like to have strings.

 

In the event that I store something like "singleImage_marginTop" as a string in the JSON document, I can get the string, yet how might I change over it into something that I could use here?

 

image.setPadding(R.dimen.(the_string_to_be_used_here));