JSF expression with "()" and message resolving

[CannyDuck]

I want to access a messageSource from a JSF view. I tried this

<h:outputText value="${requestContext.resolveMessage('my.key')}"/>

and get that error:

com.sun.el.parser.ParseException: Encountered "(" at line 1, column 32.<|Was expecting one of:<|    "}" ...<|    ...
        at com.sun.el.parser.ELParser.generateParseException(ELParser.java:1664)

Should I switch to UnifiedEL to get support for "()"? Is it possible to use the Spring EL for that? Or is their another way to access messages from JSF-views?

[CannyDuck]

I found the solution. It works like that:

#{resourceBundle['my.key']}