Hello

I can't find any resources which can answer why I'm getting an error with this:

oncomplete="#{MyBacking.oError ? #{rich:component('oErrorPanel')}.show() : return false;}"

in a richfaces a4j:commandButton. oError is referring to a method in my bean called isOError.

I'm getting the error

SEVERE: Servlet.service() for servlet Faces Servlet threw exception
org.apache.el.parser.ParseException: Encountered " "?" "? "" at line 1, column 30.
Was expecting one of:
    "}" ...
    "." ...
...

I want to say 'if a method returns true, show modal panel A otherwise false'. Any help much appreciated.