Javascript how to fill an array?

Hi! I´ve got Problems in Unity with Arrays. I want to write a value into a position in an array. But it doesnt work. The Console outputs "null". Maybe you can help me!

 function Start () {
 
 }
 
 function Update () {
 
 }
 
 
 var reihe1 : Array = new Array[5];
 
 
 function OnGUI(){
     if( GUILayout.Button("Reihe 1")){
         PR1();
     }
 }
 
 function PR1(){
     if(reihe1[0]!=1 && reihe1[0]!=2){
         GameObject.Find("muenzen_rot").GetComponent.<Animation>().Play("1_1");
         reihe1[0]==1;
         print(reihe1[0]);
     }
     if(reihe1[0]==1 && reihe1[0]==2){
         GameObject.Find("rot12").GetComponent.<Animation>().Play("1_2");
         reihe1[1]==1;
     }
 }