Play Image Array Once and Stop

Greetings and Salutations Unity Answers,

I was reading a question on Unity Community about image arrays and sequences. The writer referenced a script by cerebrate that seems really cool! My question is in the function update that repeats the animation, how one would make it play once and stop. I believe the stop.animation method stops then rewinds. But how would I implement that. I've also tried removing the snippet;

 //take a module so that annimation repeats 
 index = index % quarterCircleValues.length;

This resulted in it playing once per session then displaying a blank or white rectangle. Another option I suppose would be to let it loop but insert a timer delay between loops. How could I do that?

Below is the looping code I'm working with.

 function Update() {
 if( quarterCircleValues.length == 0) //nothing if no textures
 return;

 //we want this texture index now
 var index :int = Time.time / changeInterval;

 //take a module so that annimation repeats 
 index = index % quarterCircleValues.length;
 
 //assign it
 renderer.material.mainTexture = quarterCircleValues[index];
 }

Any assistance would be tremendous! Thanks in advance.

Digital Duane