[2.0] Passing an integer argument into a javascript function

Hi,

How do we pass an integer argument from C# into a javascript function?
I declare an integer variable first, then I pass it into the javascript function.
But the javascript code didnt execute correctly.

//First, an integer variable is declared
int numofItems;

// Returns the Javascript code to attach the context menu to a HTML element
public string GetMenuReference()
{
return String.Format("return __showContextMenu({0},numofItems);", Controls[0].ClientID);
}

//Then the Javascript is called when the oncontextmenu event happens
ctl1.Attributes["oncontextmenu"] = GetMenuReference();

Initially the javascript function has the {0} argument only and it worked fine. But when I added one more integer argument, it doesnt work. What is the correct way to pass an int argument ? :(