Weekly reccurring event question

[ubay25]

I have an event that's recurring every week for 2 weeks and only on mondays, wednesdays and fridays. I was hoping on adding an rrule like the one below.

RRule::frequency(RecurrenceFrequency::weekly())->onWeekDay([5, 10, 15, 20]);

But obvioulsy this would not work. Any suggestions that could achieve my goal?