After numerous tries with previous and current version. When these are used in the .rpt file, they do not assigned the email address or subject to the email field. The fields come up blank, only the report is present.
<var name ="message_subject" type="DB" source="field12"/>
<var name ="message_recipients" type="DB" source="field13"/>
<var name ="message_subject" type="DB" source="field12"/>
<var name ="message_recipients" type="DB" source="field13"/>