Can't get this bool variable to switch on inside my OnCollisionEnter function

Hey guys,

I have the following C# script that detects collisions on a specific collider. In it, I have a bool variable called hitDetected01, which when true, signals another script to add the damage amount calculated in this script to the damage total in the other script. My problem is that the hitDetected bool is not showing as true when it is supposed to, and I am having considerable difficulty figuring out why.

Can anyone take a look and tell me what I'm doing incorrectly?

 using UnityEngine;
 using System.Collections;
 
 public class cs_damageSec01 : MonoBehaviour 
 {
     // hitDetected bool
     public bool hitDetected01;
 
     public float damSecAmount01;
 
     void Start () 
     {
         // a collision is not detected by default
         hitDetected01 = false;
     }
 
     // *** DETECT COLLISIONS WITH OTHER OBJECTS - CALCULATES COLLISION DAMAGE ***
     void OnCollisionEnter(Collision collisionInfo)
     {
         // the following code ensures that only one collision detection occurs per call
         if (hitDetected01)
             return;
         hitDetected01 = true;
 
         // detects the collision
         float rvX = collisionInfo.relativeVelocity.x;
         float rvY = collisionInfo.relativeVelocity.y;
         float rvZ = collisionInfo.relativeVelocity.z;
 
         // calculates impact velocity
         float velocityMod = Mathf.Abs(rvX) + Mathf.Abs(rvY) + Mathf.Abs(rvZ);
 
         // calculates damage amount
         damSecAmount01 = (Random.value * 5) * velocityMod;
 
         
         Debug.Log("collision object 01 hit");
 
         
 
     }
 
     void Update () 
     {
         // hitDetected bool returns to its default state
         hitDetected01 = false;
 
         
     }
 

The other script it communicates with:

 public class cs_playerShipDamage : MonoBehaviour {
 
     // if a hit is detected
     // record damage amount
     // deduct from affected health bar
     // calculate what systems are affected
     // assign damage to those systems
 
 
     public float damSecHealth_01 = 100f;
     public float damSecHealth_02 = 100f;
     public float damSecHealth_03 = 100f;
 
     public GameObject damSecGO_01; // collider object 01
     public GameObject damSecGO_02; // collider object 02
     public GameObject damSecGO_03; // collider object 03
 
     private cs_damageSec01 ref_cs_damageSec01;  // collider script : collider script reference
     private cs_damageSec02 ref_cs_damageSec02;  // collider script : collider script reference
     private cs_damageSec03 ref_cs_damageSec03;  // collider script : collider script reference
 
     public bool hitPositive_01 = false;   // variable that determines if a collider is detecting a hit  
     public bool hitPositive_02 = false;   // variable that determines if a collider is detecting a hit 
     public bool hitPositive_03 = false;   // variable that determines if a collider is detecting a hit 
 
 
     void Start () {
 
         
 
         ref_cs_damageSec01 = damSecGO_01.GetComponent<cs_damageSec01>();
         ref_cs_damageSec02 = damSecGO_02.GetComponent<cs_damageSec02>();
         ref_cs_damageSec03 = damSecGO_03.GetComponent<cs_damageSec03>();
 
         hitPositive_01 = false;
         hitPositive_02 = false;
         hitPositive_03 = false;
 
     }
 
     
 
     // *** TALLIES UP DAMAGE AND HEALTH VALUES - DESTROYS SHIP IF OUT OF HEALTH ***
     void Update () {
 
         // 
 
         if (ref_cs_damageSec01.hitDetected01 == true)
         {
             hitPositive_01 = true;
             Debug.Log("Section 01 Taking Damage.");
             damSecHealth_01 += -ref_cs_damageSec01.damSecAmount01;
         }
 
         hitPositive_02 = false;
 
         if (ref_cs_damageSec02.hitDetected02 == true)
         {
             hitPositive_02 = true;
             Debug.Log("Section 02 Taking Damage.");
             damSecHealth_02 += -ref_cs_damageSec02.damSecAmount02;
         }
 
         hitPositive_02 = false;
 
         if (ref_cs_damageSec03.hitDetected03 == true)
         {
             hitPositive_03 = true;
             Debug.Log("Section 03 Taking Damage.");
             damSecHealth_03 += -ref_cs_damageSec03.damSecAmount03;
         }
 
         hitPositive_03 = false;
 
         
 
     }
 }