Variable in the Loop

Hi,

I would like to add a variable in the loop.
this is my loop:`
<?php
global $post;
$myposts = get_posts(‘include=3,6,13,’);
foreach($myposts as $post) :
setup_postdata($post);
?>
do stuff
<?php endforeach; ?>`

Instead of 3,6,13, I would like to add a variable called $myposts.
How do I do this, I really don’t understand.

P.S. I’m sorry, this is the wrong forum…

Thanks in advance!!
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