Swipeback area doesnt change

Questions
1

I have set in my init file the following settings:
{
swipeBackPage: true,
swipeBackPageActiveArea: 200,
iosSwipeBackActiveArea: 200,
iosSwipeBack: true,
allowSwipeout: true,
preloadPreviousPage: true
}

But the swipebackpageactivearea doesnt change. How can I change the SwipeBackPageActiveArea?
Thanks

2

var app = new Framework7({
view: {
swipeBackPage: true,
swipeBackPageActiveArea: 200,
iosSwipeBackActiveArea: 200,
iosSwipeBack: true,
allowSwipeout: true,
preloadPreviousPage: true
}
});