Change calendar_time in Lightbox programmatically

Scheduler Javascript
#1

There is the was to get and set the Values in the Lightbox. (Getting/setting the control value) It works fine for text areas and so.
But what do i have to send back to change the calender_time(mini_calendar_templates) value?
In-Use-Example: change the date by a custom button click to a specific pre-programmed date.

Thanks, Kiwi

#2

Easy solution:
scheduler.formSection(“label”).setValue(null,{start_date:new Date(your_date),end_date:new Date(your_date)});