Put shortcode in template(php) page… possible?

Hello, first of all, congratulations for the good work, works well!
I would like to insert the shortcode inside the template code to define a header …
I tried, but without success …
Can you help me? Thank you.

This is the code (it works well in the post but not in the template)
<? php echo do_shortcode (‘[folderslider folder = “wp-content / slider /”]’); ?>

The page I need help with: [log in to see the link]