like attribute question

MCTL is running Tags lists on the site:
http://www.vaultcollectibles.com/comic-art/

with this short code:
[mctl taxonomy=’post_tag’ ‘alpha_grouping=1′ title=’ARTISTS’]

Trying to use the like attribute for lists of individual categories.
This shortcode is outputting ALL categories:
[mctl taxonomy=’category’ like=’collectibles-2′ ‘alpha_grouping=1′ title=’CATEGORY TITLE’]
here:
http://www.vaultcollectibles.com/test-category-list/

Am I using like attribute incorrectly?

Thank you, robert

http://wordpress.org/extend/plugins/multi-column-taxonomy-list/