call specs2 def with parameter

Question

I have my spec2 test setup as follows

def is =
    sequential ^
      s2"""
      Action
        should return false for param false   $test(false)
                                                                             """

Def of test is as follows

def test(param: Boolean): Boolean

However I get compile time error saying missing argument for method test in my definition for is. How can I get this right?

Thanks!