WebCore use of Every timer doesn't allow hours

Just a quick query as maybe this structure on does minutes?
I have a poller piston that is usually set for minutes but I wanted a longer delay.
I tried to change the delay from 60 minutes to 3 hours but Save is disabled if I try to use hours.
Seems odd as it's just using the built in scheduler.

Once you choose Hours, you get an option for what minute of the hour. It defaults to "any" and it will not let you save until you actually choose the minute of the hour you want it to trigger.

That will teach me to go on a long vacation.
Any to 0, all fixed.
Thanks