Time-based Trigger

You can schedule your function's execution using the Time-based Trigger available in the settings panel. It allows you to trigger the function Every x minutes or using a Crontab expression:

Every x minutes

You may trigger a function at periodic time intervals, expresses in minutes. This trigger method will run the UbiFunction's main function. The minimum and maximum values admisible by this field are 1 and 60 minutes, respectively.

Crontab expression

A cron expression is a string consisting of six subexpressions (fields) that describe individual details of the schedule. These fields, separated by white space, can contain any of the allowed values with various combinations of the allowed characters for that field

Field	Values	Wildcards
Minutes	0-59	, - * /
Hours	0-23	, - * /
Day-of-month	1-31	, - * ? / L W
Month	1-12 or JAN-DEC	, - * /
Day-of-week	1-7 or SUN-SAT	, - * ? L #
Year	1970-2199	, - * /

Wildcards

• The , (comma) wildcard includes additional values. In the Month field, JAN,FEB,MAR includes January, February, and March.

• The - (dash) wildcard specifies ranges. In the Day field, 1-15 includes days 1 through 15 of the specified month.

• The * (asterisk) wildcard includes all values in the field. In the Hours field, * includes every hour. You can't use * in both the Day-of-month and Day-of-week fields. If you use it in one, you must use ? in the other.

• The / (slash) wildcard specifies increments. In the Minutes field, you could enter 1/10 to specify every tenth minute, starting from the first minute of the hour (for example, the 11th, 21st, and 31st minute, and so on).

• The ? (question mark) wildcard specifies any. In the Day-of-month field you could enter 7 and if any day of the week was acceptable, you could enter ? in the Day-of-week field.

• The L wildcard in the Day-of-month or Day-of-week fields specifies the last day of the month or week.

• The W wildcard in the Day-of-month field specifies a weekday. In the Day-of-month field, 3W specifies the weekday closest to the third day of the month.

• The # wildcard in the Day-of-week field specifies a certain instance of the specified day of the week within a month. For example, 3#2 would be the second Tuesday of the month: the 3 refers to Tuesday because it is the third day of each week, and the 2 refers to the second day of that type within the month.

Note

If you use a '#' character, you can define only one expression in the day-of-week field. For example, "3#1,6#3" is not valid because it is interpreted as two expressions.

Limitations

• You can't specify the Day-of-month and Day-of-week fields in the same cron expression. If you specify a value or a * (asterisk) in one of the fields, you must use a ? (question mark) in the other.

• Cron expressions that lead to rates faster than 1 minute are not supported.

Examples

You can use the following sample cron strings when creating a rule with schedule:

Minutes	Hours	Month day	Month	Week day	Year	Meaning
0	10	*	*	?	*	Run at 10:00 am (UTC+0) every day
15	12	*	*	?	*	Run at 12:15 pm (UTC+0) every day
0	18	?	*	MON-FRI	*	Run at 6:00 pm (UTC+0) every Monday through Friday
0	8	1	*	?	*	Run at 8:00 am (UTC+0) every 1st day of the month
0/15	*	*	*	?	*	Run every 15 minutes
0/10	*	?	*	MON-FRI	*	Run every 10 minutes Monday through Friday
0/5	8-17	?	*	MON-FRI	*	Run every 5 minutes Monday through Friday between 8:00 am and 5:55 pm (UTC+0)
0/30	20-2	?	*	MON-FRI	*	Run every 30 minutes Monday through Friday between 10:00 pm on the starting day to 2:00 am on the following day (UTC) Run from 12:00 am to 2:00 am on Monday morning (UTC).