How to set dynamic text's z coordinate actionScript 3

Question

I'm trying to figure out how to set z coordinate of a dynamic text. x and y are possible. For example, I have a dynamic text with instance name of greetMe. I can set it's y and x position by

greetMe.y = 100;
greetMe.x = 200;

Though there's no error when I tried

greetMe.z = -100

, it is still not working. I tried to see the transform button but the menu is lock or unclickable. Is there any way to set the z-coordinate of a dynamic text?

I just wanted to hide first my dynamic object behind then when the user click a button, it will show up.

---

Thanks to sweet. The best idea is to set its visibility false then when the button has been clicked, it will show up by visibility of true.

greetMe.visible = false;

then... to make it visible...

greetMe.visible = true;

Answer 1

Sounds like all you want to do is hide the textField initially and reveal it later. If this is the case you can simply set the field's visible property.

// Hide the field initially
greetMe.visible = false;  

// And show it when required
greetMe.visible = true;

If you need to put the textfield behind your button, you can use the swapChildren method of DisplayList. From the documentation):

Swaps the z-order (front-to-back order) of the two specified child objects. All other child objects in the display object container remain in the same index positions.

swapChildren(greetMe, myButton);

Or you could use setChildIndex to ensure the textField is at the bottom of the displayList like so (documentation):

setChildIndex(greetMe, 0);