mouse position on tag

how do i make the following javascript only instantiate when a certain tag is selected?

var bullet : Transform;

function Update () {
    if(Input.GetMouseButtonDown(0)){
        var ray : Ray = Camera.main.ScreenPointToRay(Input.mousePosition);
        var hit : RaycastHit;
        if(Physics.Raycast(ray,hit,200)){
            Instantiate(bullet, hit.point, Quaternion.identity);
        }
    }
}

thanks in advance!

Ok so you’re almost there right. Look at where this would fit in. You cast a ray, but then you want to check out what it hit before doing anything else. So you hit a collider, it belongs to a gameObject, you want that tag :

if(Physics.Raycast(ray,hit,200)){
    
    // What did i hit ?
    Debug.Log( " I hit tag : " + hit.collider.gameObject.tag );

then to check a condition of something , use if

if ( hit.collider.gameObject.tag == "TagImLookingFor" )
{
    // now I hit the tagged object fore sure !
}

put it all together

var bullet : Transform;

function Update () {
    if(Input.GetMouseButtonDown(0)){
        var ray : Ray = Camera.main.ScreenPointToRay(Input.mousePosition);
        var hit : RaycastHit;
        if(Physics.Raycast(ray,hit,200)){
            // What did i hit ?
            Debug.Log( " I hit tag : " + hit.collider.gameObject.tag );
            if ( hit.collider.gameObject.tag == "TagImLookingFor" ){
                // now I hit the tagged object fore sure !
                Instantiate(bullet, hit.point, Quaternion.identity);
            }
        }
    }
}