Start week on Sunday in grid using coltype dhxCalendarA

I am using a dhxCalendarA column type in my grid. How do I get the week on the calendar to go from Sunday to Saturday (rather than starting on Monday)?

Please ,try to use the following code:
myGrid.attachEvent(“onDhxCalendarCreated”,function(myCal){
myCal.setWeekStartDay(7);
});

Thanks you, that did the trick.