You can use Objectscript pattern matching:
Set String="a=b"
Write String?.e1P.e => 1
The case isn't important, just to highlight the 1P(unctuation)

I fully agree with Julius.
Any class that exceeds 100 properties is dead wrong.
We're not talking tables (relational) (and even then it's wrong) but OO design, which doesn't seem to be much in fashion these days.
Redesign your solution
 

Dramatic entrance ;-)
Looks awesome, definitely will have a look.