I respond more directly to your post below but first:

This site (PerlMonks) is almost entirely about Perl 5. You're in the right place if your focus is using or developing Perl 5. In contrast, for now, Perl 6 users and developers are generally better off visiting the IRC channel #perl6 on freenode. On #perl6 you'll find p6 experts happy to help beginners most hours of the day. Start by verifying that you have an up to date Perl 6 (#perl6ers will show you how to check) and then explain to #perl6 what you want to do with Perl 6 long term and what you are trying to do with the code you've quoted.

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In case it helps I'll cover a couple things here at PerlMonks. Running your code as it is with a current Rakudo Perl 6 errors out with:

SORRY!
===
Error while compiling
Malformed initializer at ------> $aa = ;

Fixing that and recompiling gives:

invoke() not implemented in class 'X'

So, what is X? To see the gist of something use .gist:

.print for X.gist

which returns:

(X)

This is the gist of package X i.e. not what you meant. So, time to visit #perl6. :)

Hth.