velocity mail: send mail on deletion, but variable is not available

[Sytematic]

Hello,

Using: Isomorphic SmartClient Framework (SC_SNAPSHOT- 2011-06-07/PowerEdition Deployment 2011-06-07).

When deleting a certain record, the following is sent to the server:

=== 2011-07-01 16:45:55,659 [l0-7] DEBUG RPCManager - Request #1 (DSRequest) payload: {
    criteria:{
...
        email:"test@test.nl",
...
    },
    operationConfig:{
        dataSource:"CourseEdition_students_Student",
        operationType:"remove"
    },
    componentId:"isc_ListGrid_5",
    appID:"builtinApplication",
    operation:"CourseEdition_students_Student_remove",
    oldValues:{
...
    }
}

I have an operationBinding that should send an email, specified as follows :

    <operationBinding operationType="remove" requiresRole="ROLE_USER" requiresAuthentication="true"> 
      <mail> 
        <from>noreply@mydomain.nl</from>  
        <to>$dsRequest.criteria.email</to>  
        <templateFile>emailtemplates/student_unsubscribe.txt</templateFile>  
        <subject>Uitgeschreven voor cursus</subject> 
      </mail> 		
    </operationBinding>

But when this is executed, it gives the following error:

javax.mail.SendFailedException: Invalid Addresses;
  nested exception is:
	com.sun.mail.smtp.SMTPAddressFailedException: 501 <$dsRequest.criteria.email>: recipient address must contain a domain

Somehow the velocity variable is not resolved, whilst in the criteria, as you can see, there IS a valid emailaddress present (obscured for this time, but I've got a valid email address here).

What am I missing?

[Isomorphic]

Do you modify the dsRequest, convert it to AdvancedCriteria, or anything of the kind? If so $dsRequest.oldValues.email should also work.