I am trying to fetch value using below statement

var variable_2 = context.getVariable(variablefetch);

My requirement is to fetch this variable_1 irrespective of case. For example if value of this variablefetch could be stored as

variablefetcH = typea

VAriablefetch = typea

VARIABLEFETCH = typea ....etc

So irrecpective of what i pass (in above case variablefetcH,VAriablefetch,VARIABLEFETCH) it shoule be able to fetch value tyea