Hi,
I was trying to find similar topic but I couldn’t. I have a problem with timers.
My use case: I have a task in which I set due_date for one week. Than after one week I want to send mail reminders to user to finish the task.
I have modeled it like this but I’m not sure if this is a good aproach. I just couldn’t find a better one:
First timer is defined as Date, ${dateTime().plusDays(7).toDate()}. It has a a start execution listener in which I set variable sendMail to true.
Second timer is a cycle and it’s fired every day. But at the beggining sendMail is udenfined or set to false so it won’t send mails.
It works just like I wanted it to work. But isn’t there more simple solution?
Also I have a problem because I have ~100 running instances and I have no idea how to update them to have correct dueDate. I was trying to use due_date variable in timer but I didn’t work. Any ideas?
Hi @katarzyna,
should be possible with a single timer and the ISO8601 standard.
(I didn’t test the configurations)
R/2022-04-27T00:00/P1D
This configuration would start a repetition on the 27th and run it once a day.
You could dynamically calculate the date in the middle via an expression.
Something like:
R/${dateTime().plusDays(7)}/P1D
This could certainly also be possible with a CronJob definition.
Also, you don’t have to model this if you are using a Delegate Expression to send mails. Then you could also configure it via a timeout listener in the UserTask.
regards,
Dominik
2 Likes
Oh wow! That is so simple and that’s exactly what I’ve needed. Thank you 
I do have one more question though. Since I have a lot of running instances I wanted to set this timer to task due date. Is it posibble to do?
My task looks like this:
And for example I have tasks with due date set to 23.04.2022. If I add a timer with configuration R/${dateTime().plusDays(7)}/P1D than it will fire at 27.04.2022 - 7 days from today. But this is wrong because I need it to fire at 23.04. I have a lot of tasks and they have different due dates so I’ve been thinking about using variable ${due_date} but it doesn’t work. Any ideas?
What I’;ve tried so far:
R/${due_date}/P1D
R/${dueDate}/P1D
But I get an error
Unknown property used in expression
Regards,
Kasia
