Nick,

>1. I tried that, didn't work. The scenario is the same as before. Now I have the icon sitting next to the region field, even it has value in it and nothing next to the country field which is the required one and the one with the problem.
>2. I thought that the rule should be applied to the current record, because this is the record being changed, therefore - being checked.
>3. What if I want to implement just required fields in the constructor and not to override CheckRulesHook.
>Correct me if I am wrong, when I use AddRequiredField method to add fields as required, and save method fires, there should be a check in the save method for the required fields. How can I trace that?

My apologies...I answered too quickly! As it turns out there is an "issue" in the current version with the logic that checks required fields. I've fixed the problem and it will be in the next MM .NET release (with your name on it <s>). For now, you can simply create business rules that manually check for required fields and it works fine.

Regarding stepping through the code, the business rule object's CheckRequiredFields() method is called from the CheckRules() method.

Regards,