Calculating the numbers of days a field has a specific content

I'm pretty sure you are looking for this article.

Hi André,
That solution from last year works as charme since then.

Now I have a slightly different version of that question.

We have a custom text field 'Next Step' which our sales should regularly update. I'm ask to put a custom numeric field next to it, to show how many days ago this Next Step was updated.
Is there an easy way to achieve this ?
I was thinking about storing the actual text content and check each day via a BPM timer if it has changed. If not , counter goes up by 1, if it did, counter is reset to zero. Only thing is : how can I create this in BPM...

Thanks,

Hugo

Hi André,
That solution from last year works as charme since then.

Now I have a slightly different version of that question.

We have a custom text field 'Next Step' which our sales should regularly update. I'm ask to put a custom numeric field next to it, to show how many days ago this Next Step was updated.
Is there an easy way to achieve this ?
I was thinking about storing the actual text content and check each day via a BPM timer if it has changed. If not , counter goes up by 1, if it did, counter is reset to zero. Only thing is : how can I create this in BPM...

Thanks,

Hugo