Schedules don't work


I need you help , I try to invoke function in time described by cron expression. But unfortunately I have to do sth wrong, because it doesnt work. I use schedule function, in this way:

schedule("50 10 12 12 * ? 2017" , "executeCommand", [data: [capability: capability, command: command]])

The function executeCommand is not invoked, it contains log.debug, there are no lerror logs. Any idea? I tested it many times , changing my cron schedule but I think that problem is in another place.