[xsl] Schema - match &Ouml

Hi, 

I'm writing a xsd and i want to restrict a string to satisfie a pattern. 
Currently it looks like this:

([0-9]{1,2}([a-z]|\-[0-9]{1,2}|[,]\s{0,1}(Beilage | Newsletter 
[A-Za-züäö;]*))?|[0-9]{4})

Unfortunately after Newsletter there can also be entities like &Ouml.
How do i specify that in a schema ?!
I can't just add & because it of course thinks this is the start of an entity.
Escaping doesn't work either

Idea anyone ?!

regards 

. . . . . . . . . . . . . . . . . . . . . . . . . .
Patrick Szabo
 XSLT-Entwickler 
LexisNexis
Marxergasse 25, 1030 Wien

mailto:patrick(_dot_)szabo(_at_)lexisnexis(_dot_)at
Tel.: +43 (1) 534 52 - 1573 
Fax: +43 (1) 534 52 - 146 






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