Title / Link parameters broke the php code block

Attempted this: (for use with WP E-Commerce Plug-In)

echo $social_sharing_toolkit->create_bookmarks('<?php echo wpsc_the_product_permalink(); ?>', '<?php echo wpsc_the_product_title(); ?>');

And it broke the php code for outside the loop. What did I do wrong?

http://wordpress.org/extend/plugins/social-sharing-toolkit/