Particle System not working properly?

I'm having difficulties trying figuring this one out. I have a script that makes a particle system play or stop playing, depending of some variables. The EXACT same script I have already set up for making a rain particle. This one is for a snow particle and is identical with the rain script, except the variable is_raining is switched for is_snowing. Howcome the rain script is working perfect and the snow script is not working? It just emits for a second and then stops emitting particles. When I test the particle system through a GetKey command, it IS working perfect. Anyone any idea?

This is the javascript for the snow particle system:

var statscript : Stats;

function Start ()

{

statscript = gameObject.Find("Player").GetComponent(Stats);
}

function Update ()

{

 if(statscript.is_snowing == true) 
 {
     particleSystem.Play(); 
 }
 
 if(statscript.is_snowing == false) 
 {
     particleSystem.Stop(); 
 }    

}

And this is the script for indiciting if there is snow or rain.

if (fallout == true) // if fallout then ..

 {
     if (temperature_degrees >= 1)
     {
         is_raining = true; // this plays the rain particle in RainScript
         is_snowing = false; // this stops the snow particle in SnowScript
     }
     
      else if (temperature_degrees <= 0)
     {
         is_raining = false; // this stops the rain particle in RainScript 
         is_snowing = true; // this p1ays the snow particle in SnowScript
     }
 }
 
 else if (fallout == false)
 {
     is_raining = false; // this stops the rain particle in RainScript
     is_snowing = false; // this stops the snow particle in SnowScript
 }