Explosion damage script only deals damage in the first explosion and none afterwards

I have a script that takes all gameobjects in the scene, and if they have a damage detector and is wit$$anonymous$$n the radius of the explosion damage, deals damage to them. T$$anonymous$$s works fine for just the first explosion I deal near the enemy, but not anyt$$anonymous$$ng else.. Note the first explosion is far away from the player, so the player should not be affected by it.... Every explosion has t$$anonymous$$s script on it.

 foreach (GameObject item in EntitiesDataBase.GameObjects) {
             if (Vector3.Distance(item.transform.position, transform.position) < ExplosionDistance) {
                 if (item != null) {
                     
                     if (item.GetComponent<Rigidbody>() != null) {
                         item.GetComponent<Rigidbody>().AddExplosionForce(ExplosionForce, transform.position, ExplosionDistance); // Just incase t$$anonymous$$s is stopping the script with an error.....
                         
                     }
                     
                     if (item.GetComponent<DamageDetector>() != null) {
                         float Damage = 0;
                         float Distance = Vector3.Distance(transform.position, item.transform.position);
                         // Make an equation between distance and damage
                         Vector2 Pos1 = new Vector2(0, MaxDamage);
                         Vector2 Pos2 = new Vector2(ExplosionDistance, 0);
                         float SlopeN = Pos1.y - Pos2.y; // Numerator
                         float SlopeD = Pos1.x - Pos2.x; // Denominator
                         float YIntercept = MaxDamage;
                         float Slope = SlopeN / SlopeD;
                         Damage = Distance * Slope + YIntercept;
                         item.GetComponent<DamageDetector>().Health += -1 * Damage;
                         
                         
                        
                     }
                     
                     
                 }
                 
             }
         }

"Damage Detector" is a universal script I use for detecting damage for other scripts to use. EntitesDataBase.GameObjects is an array that when a gameobject not in the array already is found, it adds it (so each gameobject has a unique ID number, results in some/most gameobjects being null)

The values that I have it set to, incase that has anyt$$anonymous$$ng to do with it, is the following ExplosionDistance = 20; MaxDamage = 100;