Please help i am having problems getting a discount to apply, this is how i have set it up.

1. I have created a discount and set the rule using "Customer has all of these product variants in the cart' and assigned it the discount type to product variance.

2. I then allocated the discount to the product.

3. I have removed the tick from the box requiring coupon code

4. I have removed the discount box from the checkout, this was left in originally but did not help

Is there something else i need to do to get this to work correctly.