Function: minus(numbers("yxx"), numbers('epe')) if numbers('epe') > numbers("yxx") else numbers("per") if numbers("yxx") > minus(numbers("yxx"), numbers('epe')) else numbers('epe') if numbers("yxx") > numbers("yxx") if numbers('epe') > numbers("per") else minus(numbers("yxx"), numbers('epe')) else minus(numbers("yxx"), numbers('epe')) if numbers("yxx") if numbers('epe') > numbers('epe') if numbers("yxx") > minus(numbers("yxx"), numbers('epe')) else numbers("per") else minus(numbers("yxx"), numbers('epe')) > numbers("yxx") if numbers('epe') > minus(numbers("yxx"), numbers('epe')) else numbers("per") else minus(numbers("yxx"), numbers('epe'))