Hello,
How can I identify which BR will be executed first when I have two Business Rules "After user modification"?
There is no such possibility. Business Rules triggered by the same operation are executed in a random order.
And can I change which one should be executed first?
No.
My goal was to set some attributes in one Rule and read them in another, as doing same in a single Rule with separate actions did not seem to work.
You can try using the If <property> changed condition to make the rules trigger only when specific properties are updated.