localized control properties doesn't get shown

I have created a jar file containing com/sun/javafx/scene/control/skin/resources/controls_da.properties.

I call the application from java Web Start.

the jar file is added in the resources tag in jnlp file.

I thought that javaFX would find these property files from the current locale. But it doesn't show the text from eg. tableview ("no columns in table") in danish. It shows it in english.

How can this be?