site importer issue

Hi - i am trying to follow along the example on http://dev.day.com/docs/en/cq/current/developing/site_importer.html . I am using 5.6.1 but when i try to drag the component to the imported html, it doesnt drag. Can't drag it there.

This is the step where "CREATING A MAPPING TO A COMPONENT"

Please let me know how to go about

Thanks,

Nitin