Iphone SDK, arc4random CGPointmake?

Question

I have tried using integers to store the number like so:

playPin = 35 + arc4random() % 118;
playY = -50 - arc4random() %100;

 if (CGRectIntersectsRect(pin.frame, refreshpin.frame)){
pin.center = CGPointMake(playPin, playY);
pinend.center = CGPointMake(pin.center.x, pin.center.y+58);
}

Then using them, when needed, but... its random the first time, then it just keeps repeating itself.

then i tried this:

 if (CGRectIntersectsRect(pin.frame, refreshpin.frame)){
  pin.center = CGPointMake(35 + arc4random() % 118, -50 - arc4random() %100);
  pinend.center = CGPointMake(pin.center.x, pin.center.y+58);
 }

And this also doesn't work, you cant even see the items i want to display!

Any ideas?

Thanks. Harry.