continuation plugin in 2.8 : compiler option not working ?

Strange, when one set compiler option (in command line parameters) with
-P:continuations:enable
there's a compilation error message with  
bad option: -P:continuations:enable

when using scalac, it compiles as expected

Was someone successful in integrating the (now embedded) continuation plugin in IntelliJ ?

Sure I could use a maven driven project but I'd rather like to have a clean intellij continuation plugin support.

Many thanks in advance