Function: minus(numbers('rep') if numbers("xxx") if numbers('rep') > gradient[1](numbers('rep')) else numbers('rep') > gradient[1](numbers('rep')) else gradient[2](numbers("xxx") if gradient[1](numbers('rep')) > numbers('rep') else numbers('rep')), gradient[2](numbers("xxx") if gradient[1](numbers('rep')) > numbers('rep') else numbers('rep')))
