[TYPO3-dam] hl_dam_gallery lightbox with caption or description (typo3 4.1.1)

[Philipp Albig]

Hallo everybody,

I'm using hl_dam_gallery with dam_ttcontent and globally activated 
lightbox. All is fine, but caption and/or description (from dam-meta) is 
not shown in the lightbox. (While title is shown correct)
Here are my constants, I believe it must work so:

plugin.tx_hldamgallery{
   enableGlobalLightbox = 1
   useIPTC = 0
   cscCaption = display:block;
   cscCaption = display:block;
}
plugin.tx_hldamgallery_pi1{
   defaultCaption = default caption
   showTitle = 1
   showCaption = 1
}

Any ideas or hints?

Thanks a lot and greetings, Ph.