custom script parameters doesn't refresh in event trigger inspector

Hi everyone,

I'm actually quite stuck with a weird problem... i created a script that takes care of my character movement, added to the character and everything works fine. i then created a ui.button on a canvas and added an event trigger to know when the user has his finger pressing the button or releasing (using pointer up and down). The problem is that i cannot select certain public functions in my related script nor any variables. Moreover, there is one parameter i can selct from my script which doesn't actually exist anymore !

i first though of a compilation error so here is my script...

using UnityEngine; using System.Collections;

public class character_control : MonoBehaviour {

 public CharacterController me;

 public float motion_speed = 30.0f;
 public float mousesensitivity = 2.0f;

 public float camangle = 0.0f;
 public float rotationSpeed = 0.1f;
 public float look_at_rotationSpeed = 100.0f;

 public bool can_turn = true;
 public bool smart_control = true;
 
 public float forwardspeed = 0.0f;
 public float forward_input = 0.0f;

 void Start ()
 {

 }
 
 // Update is called once per frame
 void Update ()
 {

     //update the camera angle for game purposes
     camangle = me.transform.rotation.eulerAngles.y;

     //rotation with keyboard //touchpad...
     movement();

 }


 public void movement()
 {
     if(can_turn)
     {

         if(Application.isMobilePlatform)
         {
             if ((Input.touchCount > 0) && (Input.GetTouch(0).phase == TouchPhase.Moved))
             {
                 // Get movement of the finger since last frame
                 Vector2 touchDeltaPosition = Input.GetTouch(0).deltaPosition;
                 transform.Rotate(0, touchDeltaPosition.x * 5.0f, 0);
             }

         }
         else
         {
             transform.Rotate(0,Input.GetAxis("Horizontal")*rotationSpeed,0);

             forwardspeed = -Input.GetAxis("Vertical")*motion_speed*set_walking_direction(smart_control);
         }    

     }

     Vector3 speed = new Vector3 (0,0,forwardspeed);
     me.SimpleMove(speed);
 }

 public void set_forward_speed(float speed)
 {
     forwardspeed = speed*motion_speed*set_walking_direction(smart_control);
 }



 public int set_walking_direction(bool activated)
 {
     if(smart_control==true)
     {
         if((camangle>=90)&&(camangle<=270))
         {
             return 1;
         }
         else return -1;
     }
     else return 1;
 }

}

and here is what i can see in my inspector :

This script is attached to my player gameobject, as you can see, i can select movement() (which is a custom method) but none of the others.

more interestingly, the float forward_speed doesn't exist in my script...

any suggestions ?

thank you very much for any help.