Cannot Get It To Work

Many thanks for providing this plugin.

I have activated it and am trying to use a shortcode as an attribute of another shortcode.

For example, this is the standard use format for the plugin shortcode I am using:

[ebay_search query=”guitar”][/ebay_search]

I want to replace “guitar” with the contents dynamically taken from another shortcode, for example [slug].

My understanding from the plugin notes would be to use:

[dy_shortcode sc=”ebay_search” at=”query”][custom query=”slug”][/dy_shortcode]

but this doesn’t work.

Have I missed something?

The page I need help with: [log in to see the link]