Copying & Pasting with a script

I’m brand new at scripting, and my search of the forums didn’t produce the results I’m looking for.
So if this is old info I apologize in advance.

I have a 301 page InDesign CS2 document.
Now I need to translate it into 7 different languages.
There are some characters that are common to all the languages and live in their own text fields.
I need to tell InDesign to copy these characters from their requisite fields in document A and paste them into the same fields in document B.

So far I can’t find a way to have the scripts speak to two separate documents, in the same application.
Is it possible, or am I just wishing?

Thanks for any help that points me in the right direction.

I don’t have your software, but the usual way is to open both documents and refer to them by name.

tell application "TextEdit"
	set T1 to text of document "Doc1.rtf"
	set T2 to text of document "Doc2.rtf"
	set text of document "Doc2.rtf" to T1 & return & T2
end tell