you can use Match script something like below...
boolean operationsMatch = incomingRequest.getOperation().equals(sourceRequest.getOperation());
if (operationsMatch) {
String incomingValue = incomingRequest.getArguments().get("request_arg");
boolean ret = !incomingValue.equals("111111") || !incomingValue2.startsWith("222222");
return ret;
}
// false means no match
return false;
compare the incoming value with expected value and return true or false... if false then it will proceed with the next transaction in order... if true, it will respond with the current txn response.
hope this helps !!