Change Slider value with click

hi

i'm having a little trouble in my unity game and i'm hoping to have a little help here.
i have some clickables GO in my scene, i need to show a panel with a Slider as children whenever a GO is clicked, the slider when showed should increase it's value progressivly until it's filled.
My problem is that the Slider increases it's value one time (not until its filled) as i clicked over the GO one time, what i want is that the Slider should increase it's value until it's filled everytime i clicks over a GO

i'm using this code but it's not working

Code (CSharp):

1. void OnMouseDown(){
2.         GameObject.Find ("CanvasAliments").GetComponent<CanvasGroup> ().alpha = 1;
3.         Slider niveau = GameObject.Find ("CanvasAliments").transform.FindChild ("Panel").transform.FindChild ("Slider").GetComponent<Slider> ();
4.         niveau.value += Time.deltaTime;
5.             if (niveau.value == 1) {
6.                 Debug.Log ("done");
7.             }
8. }

 

Put a breakpoint on line 4 and see what the niveau.value is after each click.

Keep in mind Time.deltaTime is usually quite small, 1/50th of a second or so, so it will take a lot of clicks to get the value up to 1.