Platform OnTriggerEnter movement with User Input

Hello,

I have been looking for help on trying to get this idea I'm working on for a student project working. The premise is to have a platform that can be moved via user input.

I want to have it so that when the player is on a platform, has a controller, he can press the 'C' key and the platform will move up to a certain spot.

After hours of research, I came upon a neat idea from Here (it's the 2nd answer). The issue is that it's in Java/Unity script. I am a C# programmer (and the values for the controller counter I need to reference is in C#).

So, I THINK I modified the code correctly so that I could use it in C#. The reason I said "think" is due to the fact that once a player is on the platform, I press the 'C' key, but nothing.

Here is the code:

 using System.Collections;
 
 public class PlatformTrigger : MonoBehaviour {
     
     public Transform targetA;   //Start pos
     public Transform targetB;    //End pos
     public float speed = 0.1f;    //speed of movement from A to B
     
     private Transform currentTarget;  //Current platform position
     
     private bool bIsMoving; //is the platform moving?
     
     // Use this for initialization
     void Start () {
         
         //currrent target is the start pos
         currentTarget = targetA; 
         
         //Mover/setter of the platform (unless already there
         MovePlatform(transform.parent, currentTarget, 10.0f);
         
         //platform is not moving
         bIsMoving = false;
     }
     
     IEnumerator MovePlatform (Transform platform, Transform destination, float velocity){
         
         //platform is now moving
         bIsMoving = true;
         
         //get the start & end pos for movement
         Vector3 fromStart = platform.position;
         Vector3 toEnd = destination.position;
         //initalizes a timer
         float timer = 0.0f;
         
         //a cycle to end movement once the timer reaches 1
         while (timer < 1.0f){
             //timer count up
             timer += Time.deltaTime * velocity;
             //if statement to smooth movement from 1 to 0
             if (timer > 1.0f){
                 timer = 1.0f;        //clamps the timer at 1 to end movement
                 //cosine routime to smooth the movement near the end
                 float weight = 0.5f * (1.0f - Mathf.Cos(timer * Mathf.PI)); 
                 // set the platform position according to weight (0=from, 1=to)
                 platform.transform.position = Vector3.Lerp (fromStart, toEnd, weight);
                 yield return new WaitForFixedUpdate(); // let Unity free till the next fixed update
             }
         } 
         
         //movement settled, reset!
         bIsMoving = false;
     }
     
     void OnTriggerEnter(Collider other){
         //if the platform is not moving
         if (!bIsMoving){
             //if the player pressed the 'C' key AND he has a controller
             if(Input.GetKeyUp(KeyCode.C) && Timer.controllerCount > 0){
                 //swap targets
                 if (currentTarget == targetA){
                     currentTarget = targetB;
                 }else {
                     currentTarget = targetA;
                 }
             }
         // and move platform to the new target:
         MovePlatform(transform.parent, currentTarget, speed);
         }
     }
 }

Maybe I'm doing something wrong, could someone be so kind to look over my code and help me try to figure this out? I believe I have set up everything correctly. Here is the setup for the actual platform and here is it for the ending, floating, point . Does this look like a correct set-up for this?

Please help me as soon as you can? This is one of the main mechanics in my game, and I would LOVE to get it to work! If anyone has a better way of trying to accomplish the same method (trigger move a player from PointA to PointB if he presses a key and has a controller) let me know?

Thanks.