And on a new line try typing swipeLeftRect. and then let the compiler suggest extra properties. For example, you could add
swipeLeftRec.numberOfTouchesRequired = 2
So that could solve the problem by making people do a two finger swipe.
Generally speaking, I think if you are doing this to get kids to turn to the next page, you should just put an arrow in the top left or right of the screen. Leads to far less accidental touches / swipes. And even if you could lengthen the swipe time for it to register, young kids do a lot of slow gestures by accident too.