forward a mail

Hi,
I´m trying to forward a mail theMail with theSubject and the Adress.

	tell application "mail"
set theMessagetoSend to forward theMail
		
		tell theMessagetoSend
			make new to recipient with properties {address:theAddress}
		end tell
end tell

it says theMessagetoSend is not defined.
Any help appreciated.

it works fine with a new message:

set theMessagetoSend to make new outgoing message with properties {subject:theSubject, content:theBody & return & return, attachment:theAttachment}
			tell theMessagetoSend
				set theAddress to "xy@yx.com"
				make new to recipient at end of to recipients with properties {address:theAddress}
								end tell

but not with one to forward…

I don´t get it. It opens the forwarded message but keeps complaining “theMessagetoSend is not defined”.

tell application "Mail"
		
	set theMessagetoSend to forward theMail with opening window
		set to recipient of theMessagetoSend to currentMailAdress)
		send theMessagetoSend
		
end tell

It´s my 2nd script. Might be stupid. Thanks to this Forum, the 1st works great!