BCE0044 error

I need your help guyz.
I have problem with this “HealthControl” script
Here is the script:
var Lives = 3;

function Update ()
{
	guiText.anchor = TextAnchor.TopRight;
	guiText.text = "Lives:" + Lives ;
		if (Lives = 0)
			{
				Application.LoadLevel("GameOver");
			} 	
}

And here is the error:

Right now I dont now what to do. If you know how to solve this pls reply

A single equal sign is for assignment, double equal sign is comparison. Modify your if statement like:

var Lives:int = 3;
function Update ()
{
    guiText.anchor = TextAnchor.TopRight;
    guiText.text = "Lives:" + Lives ;
    if (Lives == 0)
    {
      Application.LoadLevel("GameOver");
    }    
}