Create task with BPM whenever the content in the “Next Step” field of an opportunity is changed

Hello,

We would like to create a task via BPM and assign it to the person assigned to the opportunity whenever the content in the “Next Step” field of an opportunity is changed.

Unfortunately, there is no 'has changed' condition in the module field evaluations.




Is there another way to achieve this via BPM?


I would be happy to receive any tips or advice.

Thanks!

Steffen