> Its not my goal to change anything, I just wanna make sure 
> that the length 
> value in the Sub type has the same value as the 
> SUBSTREAM_length element. 
> But I dont know and dont need to know this value . I was 
> hoping Xpath could 
> be used but I'm getting a lot of negative reactions :(

The negative reactions are because you aren't stating your requirements
very clearly.

"I wanna make sure that" has at least two meanings:

* I want to test whether [the two things have the same value]
* I want to change [one thing to have the same value as the other]

Unless you can start writing a clearer specification of your
requirements, we might as well all go home.

Michael Kay



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