Help with entity\isAttributeChanged() in BPM

[MatLudlam]

Hi, I have a simple BPM on the Opportunity table that looks like this:

The area that I am having issue with is the Inclusive Gateway. What I want to happen is that the "Generic Updates" are always performed and that the "Lost Updates" only get performed if the Stage is "Closed Lost" and that the Stage field has just been changed.

This is how I have the Gateway set up.

The thing is that it never takes the "Lost Updates" branch.

To work out which item on the AND was causing the issue I changed it to:


And it would take the first branch appropriately. So there seems to be an issue with my usage of the "entity\isAttributeChanged()" function.

Can you offer any advice?

Thanks.

[yuri]

Hi Mat,

It is not supposed to work there. It was intended to work within a single BPM node, single workflow rule or in before-save script. When you check entity\isAttributeChanged, the information about the entity state before the process is started is not available.

[MatLudlam]

Ah ok, so I will create a separate stream them that uses a Conditional Start Event

[MatLudlam]

Hi yuri I am working on this again. I now have a simple BPM that triggers when an Opportunity is written, and the stage changes, thus:



This works well.

I now want to make some decisions based on the old value of "Stage" which I am struggling to get. The code that I am using in an "Update Target Record" is:

$old_stage = entity\attributeFetched('stage');
$new_stage = stage;

description = string\concatenate("old: ",$old_stage,", new: ",$new_stage);

When this runs, both variables have the same value, and that is of the new value. How do I get the original value?

Thanks.

[yuri]

Hi,

It's not possible as a mentioned above. You can create a read-only field and copy fetched value to there with 'before-update script' (Entity Manager > formula).

Before-update script:
previousStage = entity\attributeFetched('stage');

Then read it in BPM.

BTW there's already a field lastStage in opportunity. The last stage before stage becomes Lost or Won is written to there.