[TYPO3-calendar] plugin.tx_cal_controller.view.category.tree.category / calendar

[PM]

I tried to use

plugin.tx_cal_controller.view.category.tree.category = 3
plugin.tx_cal_controller.view.category.tree.calendar = 1

to choose the categories and calendars that can be seen in the legend 
(selector of categories).

But it seems, that both parameters don't limit anything. I always see 
all my categories and calendars.


Has anyone an idea how to select the categories that should be 
shown/selectable in the legend?