You're trying to do a slice of a slice - not possible. Try slicing within a map across the outer slice.

In reply to Re: Slicing multilevel hashes by dragonchild
in thread Slicing multilevel hashes by bobf

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":