>Jim,
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>>A student bizobj has a child object called guardian object. The student bizobj has a rule that if the student is under age 18, there must be at least one guardian. The guardian object has a rule that if the student is under 18, one guardian must be a contract buyer. So you see, two way communication between the bizobjs during rules checking is necessary. Since I have never had to deal with this scenario, I was hoping someone could offer some suggestions.
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>You could create a method in the Student business object called "IsGuardianPresent()" (or something similar). This method could call a corresponding method on the Guardian object, passing the student id as a parameter. This method can be called from the Student business rule object as follows:
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>This.oBizObj.IsGuardianPresent()
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>You could also create a method in the Guardian object called "IsStudentUnder16()". This method could call a corresponding method on the Student object, passing the student id as a parameter. This method can be called from the Guardian business rule object.
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>In each case, the two methods can either use an existing reference to the Guardian or Student object, or create a new instance as necessary.
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>Hope this helps!

Kevin,

I thought about doing that, but if the data is not saved, creating a new instance won't work. The problem is further complicated when moving to COM. How do I enusre that the current instance is used for the bizobjs?