numberposts not showing specific number [closed]

I’m using List Category Posts plugin to show up the specific posts from a category on a page.
It works well, but if I’m trying to reduce the number of my latest posts to 3, for example this way:

[catlist id=13 numberposts=3]

It shows up all the posts from that category. Am I doing somwthing wrong?

The numberposts parameter is correct. I’m using this code:

[catlist numberposts=10 excerpt_size=10 excerpt=yes thumbnail=yes thumbnail_class="alignright" class="lcp_catlist_clear"]

It’s working on this page, showing the latest 10 posts. Maybe the category id is wrong?