[Glass] Why this closure fails to compile?

[Mariano Martinez Peck via Glass]

'[ :node :dict |
(node value isSymbol and: [ node value matchesRegex: ''.*oldSelector.*'' ])
  ifTrue: [
    dic at: #''oldSelector'' put: node value.
    true ]
  ifFalse: [ false ]
]' evaluate

???

I don't get it...
maybe I am too tired...

thanks in advance,

-- 
Mariano
http://marianopeck.wordpress.com
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