Short Code not working

Hi there,

I am using this plugin in an area that is not a widget by using the shortcode I found here.

I am trying to get it to pull from a post category that i have created by using the shortcode argument cat=”” and entering my category name in between “”. However, everytime I add the shortcode argument cat=”” into my shortcode, the short code stops working.

Is there another shortcode argument for category that I am supposed to be using?

Here is the code that works:
[rpwe limit=”3″ thumb=”true” orderby=”date” thumb_align=”rpwe-alignleft” thumb_height=”75″ thumb_width=”75″ excerpt=”true” styles_default=”false” length=”5″ post_type=”post” date=”false” readmore=”true” ]

Here is the code that doesn’t work:
[rpwe limit=”3″ thumb=”true” orderby=”date” thumb_align=”rpwe-alignleft” thumb_height=”75″ thumb_width=”75″ excerpt=”true” styles_default=”false” length=”5″ post_type=”post” date=”false” readmore=”true” cat=”whats-hot” ]

p.s. The category slug is “whats-hot”

Thank you in advance.