Flash Actionscript 3 passing a number to dynamic text field

On my stage I have a dynamic text field (instance name = lives).

In my actionscript I have created a number variable called livesnum. And then beneath that I'm setting the textfields value to be the livesnum variable but I get the following error:

1067: Implicit coercion of a value of type Number to an unrelated type String.

My actionscript is as follows :

var livesnum:Number = 4; //Amount of lives

lives.t开发者_Python百科ext = livesnum;

How would I achieve setting the textfield as the numeric value of the variable?

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Use toString() function:

lives.text=livesnum.toString()

or use a cast String():

lives.text=String(livesnum);