Values not updating before object destruction.

I'm making a Space Invaders style video game for a game making competition. Part of the competition required the game to have some educational value, so I put a number above each enemy so the player would solve simple math problems by shooting the enemies. When a shot hits an enemy, it is supposed to take its individual value and set another variable equal to it, and then destroy itself. However, it seems that the enemies are not successfully assigning their values to the larger variables. My code for the two scripts concerned in this process goes as follows:

Enemy Destruction Script:

 #pragma strict
 
 public var scoreIncrease = 1;
 
 public var mathNumbInput : float;
 public var OnTopRow = false;
 public var OnLeft = false;
 public var OnRight = false;
 
 var testForLowIncrease : float;
 var testForUpIncrease : float;
 
 function OnTriggerEnter2D (info : Collider2D)
 {
     if (info.name == "Shot")
     {
         if (GameMaster.mathNumber == 0)
         {
             GameMaster.mathNumber = mathNumbInput;
             Debug.Log("Number Updated");
         } else {
             GameMaster.mathNumber2 = mathNumbInput;
             Debug.Log("Number Updated");
         }
         if (OnTopRow == true)
         {
             if (testForLowIncrease == EnemyMovementScript.lowerBound)
             {
                 if (OnLeft == true)
                 {
                     EnemyMovementScript.increaseLowerBound += 1;
                     EnemyMovementScript.increaseLowerBound = EnemyMovementScript.increaseLowerBound + EnemyMovementScript.lowIncreaseBonus;
                     EnemyMovementScript.lowIncreaseBonus = 0;
                 }
             }
             else
             {
                 EnemyMovementScript.lowIncreaseBonus += 1;
             }
             if (testForUpIncrease == EnemyMovementScript.upperBound)
             {
                 if (OnRight == true)
                 {
                     EnemyMovementScript.increaseUpperBound += 1;
                     EnemyMovementScript.increaseUpperBound = EnemyMovementScript.increaseUpperBound + EnemyMovementScript.upIncreaseBonus;
                     EnemyMovementScript.upIncreaseBonus = 0;
                 }
             }
             else
             {
                 EnemyMovementScript.upIncreaseBonus += 1;
             }
         }
         GameMaster.score += scoreIncrease;
         GameMaster.levelAdvance += scoreIncrease;
         Destroy(gameObject);
     }
 }

General game management script:

 #pragma strict
 
 var playerSpawner : Transform;
 var playerSpawner2 : Transform;
 
 static var mathNumber : float;
 static var mathNumber2 : float;
 
 public var test1 : float;
 public var test2 : float;
 
 var mathTotal : float;
 
 static var mathGoal : float;
 
 var level = 1;
 
 var size1 : float = 200;
 var size2 : float = 200;
 
 var yOffset : float = 40;
 
 static var score = 0;
 static var levelAdvance = 0;
 
 var lengthToWait = 100;
 var waitTimer = 0;
 
 var playerLife : Transform;
 var gameOverScreen : Transform;
 
 var playerLives = 4;
 static var playerLifeDown = false;
 function Start ()
 {
     mathGoal = Random.Range(2, 19);
 }
 
 function Update ()
 {
     if (mathGoal == 0)
     {
         mathGoal = Random.Range(2, 19);
     }
     test1 = mathNumber;
     test2 = mathNumber2;
 
         if (mathNumber > 0)
         {
             if (mathNumber2 > 0)
             {
                 mathTotal = mathNumber + mathNumber2;
 
                 if (mathTotal == mathGoal)
                 {
                     Debug.Log("Well Done");
                     Instantiate(playerSpawner, Vector3(2.0f, 0, 0), transform.rotation);
                     Player_Movement_Script.playerSpritesOnScreen += 1;
                     mathNumber = 0;
                     mathNumber2 = 0;
                     mathTotal = 0;
                     mathGoal = Random.Range(2, 19);
                 }
                 else 
                 {
                     mathNumber = 0;
                     mathNumber2 = 0;
                     mathTotal = 0;
                     mathGoal = Random.Range(2, 19);
                 }
             }
         }
     }
     if (playerLifeDown == true)
     {
         if (playerLives > 0)
         {
             EnemyMovementScript.speed = 0;
             Player_Movement_Script.speed = 0;
             Player_Movement_Script.playerCanShoot = false;
             Enemy1Control.enemiesCanShoot = false;
             if (waitTimer < lengthToWait)
             {
                 waitTimer ++;
             }
             else
             {
             Instantiate(playerLife, transform.position, transform.rotation);
             waitTimer = 0;
             EnemyMovementScript.speed = EnemyMovementScript.saveSpeed;
             Player_Movement_Script.speed = 10;
             Player_Movement_Script.playerCanShoot = true;
             Enemy1Control.enemiesCanShoot = true;
             waitTimer = 0;
             playerLifeDown = false;
             playerLives -= 1;
             }
         }
         else
         {    playerLifeDown = false;
             Instantiate(gameOverScreen, transform.position, transform.rotation);
         }
     }
 }
 
 function OnGUI ()
 {
     GUI.Box (new Rect (Screen.width/2-size1/2, yOffset, size1, size2), "Lives: " + playerLives + "        Level: " + level + "        Score: " + score + "        Math Goal: " + mathGoal + "        Current Number: " + mathNumber + " testing " + Player_Movement_Script.playerSpritesOnScreen);
 }

Any advice or suggestions would be appreciated.