Can't show categories in thumbnail label!

[orbspider]

Whatever I try I can't get the categories showing in thumbs labels.

Tool tips are fine they show categories with {Categories}

But with labels I've tried {Categories} {IPTC:Category} {IPTC:Keywords}

and none work. any other way?

[xnview]

Sorry but currently not possible

[orbspider]

OK, hope it can be fixed though