show 1 thumbnail in article intro text

Looking at the parameter list I'm hoping it's possible to have 1 thumbnail image from a gallery included in an articles intro text and then display the full gallery after the read more. Having a hard time with the german though!

I'm guessing it will be something like:

{gallery}gallery path, thumbnail=image name{/gallery}

--readmore--

{gallery}gallery path{/gallery}

Hope you can help - this plugin is fantastic!