Error Code BCE0019

I can't find an answer to this error anywhere but my script is for making the character do he run animation when the a or d key is pressed but it says rowNumber isn't a member of object

 #pragma strict
 
 var AT; //Store something
 
 function Start () {
     AT = gameObject.GetComponent(AnimateTexture); //Store AnimateTexture Script
 }
 
 function Update () {
     if(Input.GetKey("a")){ //Player moves left
         AT.rowNumber = 1; //Change to running animation
     } else if(Input.GetKey("d")){ //Player moves right
         AT.rowNumber = 1; //Change to running animation
     } else r{ //Player is not moving
         AT.rowNumber = 0; //Change to idle animation!
     }
     
 }