[1.12 ] Issues getting a specific tipped arrow

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I tried getting a tipped arrow like this:

 

ItemStack item = new ItemStack(Items.TIPPED_ARROW,1,5);

 

however the shot arrow is always a generic tipped arrow without any effects.

 

This is the method i use this in:

 

    @Override
    protected EntityArrow getArrow(float p_190726_1_)
    {
        Random rand = new Random();
        EntityArrow entityarrow = super.getArrow(p_190726_1_);
        if (rand.nextInt(2) == 0)
        {
            ItemStack item = new ItemStack(Items.TIPPED_ARROW,1,5);
            ((EntityTippedArrow)entityarrow).setPotionEffect(item);
            return entityarrow;
        }
        else
        {
            return entityarrow;
        }
    }