yield WaitForSeconds

What are you trying to accomplish? The yield will wait, then begin executing the code after the yield is done waiting. What are you trying to accomplish with the if?

Don't think yield can be used like that no. WaitForSeconds can only be used with a yield statement in coroutines.

Have a look at this great earlier answer for a nice description of how to use yield waitForSeconds :)

http://answers.unity3d.com/questions/350721/c-yield-waitforseconds.html

$$anonymous$$y code is this:

 function OnTriggerEnter (col : Collider){
     if(col.gameObject.tag=="Player"){
         var mesh : $$anonymous$$esh = GetComponent($$anonymous$$eshFilter).mesh;
         mesh.Clear();
         collider.enabled = false;
         audio.Play();
         yield WaitForSeconds(1);
         Invetory.inventoryArray[0]++;
         Destroy(gameObject);
     }
 }

This is when the player hits this cude, it adds 1 health potion to his invetory after 1 second

So, I tried to hack my game with Cheat Engine [add more health potions] and it works. I want to say that if a potion added in less than one second then remove it. Any suggestions?

I think Dimling is right, you have to use it in a coroutine. Ex:

 function OnTriggerEnter (col : Collider){
     if(col.gameObject.tag=="Player"){
        var mesh : $$anonymous$$esh = GetComponent($$anonymous$$eshFilter).mesh;
        mesh.Clear();
        collider.enabled = false;
        audio.Play();
        StartCoroutine(WaitAndDo(1));
     }
 }
 
 function WaitAndDo (waitTime : float) {
         // suspend execution for waitTime seconds
         yield WaitForSeconds (waitTime);
         Invetory.inventoryArray[0]++;
         Destroy(gameObject);
     }

Does this suits you ?