How to fix as3 number?

Question

ActionScript

The object changes its height along the y axis. How to fix the minimum number (the highest point of the object's flight)?

Answer 1

var obj:Object; //Tvoy obyekt
var minY:Number = 10; //Minimalnoye znacheniye po Y osi
if (obj.y < minY)
{
  obj.y = minY;
}

Answer 2

var obj:DisplayObject; 
var minY:Number = 10; // Минимальное значение
var currentY:Number; //Значение, которое будет меняться
...
obj.y = Math.max(minY, currentY)