Player name above players head

Hello, I am new to construct and I have a question.

I have created a character who is running over the screen. I have pined a text to him and I am wondering how to make a variable for his name so that on a start screen you can type in a name and that will be shown above the player.

The basics are something like this:

Create global variable PlayerName

make a textbox

on textbox changed set global variable Playername to : textbox.text

set the pinned textobject text to : Playername

thank you, i will try that

or: https://dl.dropboxusercontent.com/u/44710358/name.capx