back slash character (matching)

Hello folks,

I have problems with '\' character matching...
I am new to XSLT technology, so hopefully my question can be easily answered
- 
I count on your generous help!!

Does anyone know how I can get around the following problem:

fn:replace($filename,  '\' ,   '/')

Saxon processor throws an exception:

net.sf.saxon.type.RegexTranslator$RegexSyntaxException: Error at character
2 in regular expression: expected ({)

any help is greatly appreciated!

cheers!
victor

Victor Breygin
Consultant, Integrated Customs Systems,
Canada Border Services Agency
1-(613) 952-7077