How do I stop my animation from looping while I hold down a key?

I need my animation to stop looping while I hold down the Up-Arrow-Key. There are some other functions behind that needs the condition to be just GetKey, NOT GetKeyDown. I also need the animation.play to be on a boolean condition for some other functions behind.

I also tried setting the WrapMode to just Once.

Oh and the animations are attached on the object's Animation Component.

Here's the code:

 //I need this to be GetKey, *NOT* GetKeyDown
 if (Input.GetKey (KeyCode.UpArrow))
     {
         upBool = true;
     }
 
 //I need the animation.Play to be on bool too, not on the button's if-statement
 if (upBool)
     {
         animation.Play ("UpAnim");
     }
 
 //This loops it over and over while I hold down the Up-Arrow-Key but I only want it to play once.
 //Once I start holding the Up-Arrow-Key, it will stop looping and just stay on the last frame of the animation.

Thanks :) :) :)