[Plugin: WP Customer Reviews] Calling across multisite

Is it possible to call reviews within a multisite. Say for instance if I am in site 3 why can’t I get the following to work?

<?php switch_to_blog(1); ?><?php echo do_shortcode('[WPCR_SHOW POSTID="ALL" NUM="1" SNIPPET="375" MORE="Read more reviews..." HIDECUSTOM="0" HIDERESPONSE="1"]'); ?><?php restore_current_blog(); ?>

any help appreciated