I'm using XSLT Tranformation service to transform an incoming XML document to a different format. I've tested this successfully using a literal value for my XSL, but I'd like to store the XSL in a separate file rather than storing it as a literal string in the process properties. However, I don't see any way to reference an XSL file in the process properties. The only options are XPath expression, variable (string), literal value, and template.
Alternatively, maybe there is a way to read the contents of an XSL file into a string variable which can then be used in the XSLT Tranformation?