Hi.
I have a similar case. I change the subject and also add some info in front of the content of the mail. First I fetch the interaction content like this;

This returns the variable vOut with the interaction content
Then I set the new values
vSubject=UData['Subject']
vSubjectMod='Something else subject'
vContent=Cat['This is added text',Char[13],Char[10],GetStringKey['InteractionContent.Text',vOut]]
vContentHTML=StrReplace[GetStringKey['InteractionContent.StructuredText',vOut],'<p>Webform sent</p>',Cat['<p>This is added text'</p>',Char[10],Char[13],'<p>Webform sent</p>']]
Then I change the userdata

and update the interaction UCS Record


And then I redirect the email

I may do to much, but this works :)
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Erik Norheim
DnB Bank ASA
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