Generating h2 headings inside article | CyberSEO Pro | Support Forum

Hi.
Can you pls help to solve the problem?

How can I correctly generate h2 headings inside article description? 

Write now I am using this:
Generaten an informative fulltext article on the subject of %post_title%, use headings inside the article description (give them bold style and tag style H2) that better fit the topic of the below::%post_excerpt%

Is it correct? Because sometimes it generate it correctly and sometime not.