devot:eeDevoted to ExpressionEngine

We’re running EE 2.9.0 and store v2.4.0

We’ve installed Matrix and fully licensed it, created the custom Matrix field and set up the quantity and price fields as suggested on the add-on page (using cell type of text, not number).
We’ve entered the correct database field / col id’s into the Bulk Discount settings screen and entered data in the following format onto the product

bulk quantity : 1
price : 10

bulk quantity : 10
price : 9.50

bulk quantity : 2
price : 8.50

and so on

Adding to the cart however still only enters the primary price for 1 (or multiples)  of the item as set in the ‘Store’ product details

Advice needed!