Recurring tasks every several days in week
I'm trying to create a recurring tasks in spanish that happens several days in the week: "every sunday, monday, tuesday, wednesday, thursday at 20:30" ("cada dom, lun, mar, mie, jue a las 20:30"). The system keeps returning me error. I have even tried to write just "every mon, tue" ("cada lun, mar") but still doesn't work.
Could you help me, please?
Thank you. Kind regards.