### Use case Currently, a typo in variable name is hard to spot as it might silently pass to the downstream system unnoticed. ### Possible solution It might be helpful if we implement opt-in "strict mode" so referencing unknown variables becomes error rather than acceptable behavior. See: * https://perldoc.perl.org/strict * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Strict_mode ### Possible workarounds _No response_ ### JMeter Version 5.6 ### Java Version _No response_ ### OS Version _No response_