Hi Vem
In theory is correct, but according to the best practice..(Business Rules Best Practices - ServiceNow Wiki )
| before | Use to update information on the current object. For example, a business rule containing current.state=3; would set the State field on the current record to the state with a Value of 3. |
| after | Use to update information on related objects that need to be displayed immediately, such as GlideRecord queries. |
4 Prevent Recursive Business Rules
Avoid using current.update() in a business rule script. The update() method triggers business rules to run on the same table for insert and update operations, leading to a business rule calling itself over and over. Changes made in before business rules are automatically saved when all before business rules are complete, and after business rules are best used for updating related, not current, objects. When a recursive business rule is detected, the system stops it and logs the error in the system log. However, current.update() causes system performance issues and is never necessary.
Maybe your BR is seen as recursive and for this reason it is stopped by the system.
I would suggest to have a look to the log.
I hope this help
Cheers
R0b0
