EL expression character problem

[bashan]

Hi,

When I use in EL expression like this:

#{myVar < someOtherVar}

I get this error when page loads:

Error Parsing /WEB-INF/facelets/components/rating.test.xhtml: Error Traced[line: 16] The value of attribute "rendered" associated with an element type "null" must not contain the '<' character

Should I use XML entity in this case? is it ok?