Activiti / Camunda change boundary timer with variable

Question

I got a special question regarding timer boundary events on a user task in Activiti/Camunda:

When starting the process I set the timer duration with a process variab

Answer 1

After some time of thinking I came up with a workaround like that:

I start the process with two variables. "hurry" is evaluated for the boundary timer. And "extendDeadline" is initialized with false. If the timer triggers and the process advances to the exclusive gateway, the value of "extendDeadline" is evaluated.

If a user has changed the value of "extendDeadline" to true during the the timer was running the process returns to the user task again where the boundary timer is set to the value of "hurry".

If the "extendDeadline" is still set to false, the process can proceed.