Glowing effect in a UILabel using inner shadow
===

I am trying to achieve this glowing effect for a **UILabel** as shown below :

![Glow effect][1]
----------
I have subclassed `UILabel` , and created a custom label class that adds an outer shadow using

    CGContextSetStrokeColorWithColor(context, outlineColor.CGColor);
    CGContextSetFillColorWithColor(context, insideColor.CGColor);
    CGContextSetShadowWithColor(context, CGSizeMake(0, 0), self.glowAmount, blurColor.CGColor);

But this gives me the following result 

![MyImage][2]


As you can see this lacks the desired effect because of the missing **inner shadow.** Can anyone suggest how to achieve this?

Thanks!
  [1]: http://i.stack.imgur.com/EBV5Q.png
  [2]: http://i.stack.imgur.com/vSZou.png