Hi all and thank you for reading my post.
I'm using two third party extensions that work perfectly individually (one allows you to edit an existing orders product, price, shipping, etc) and the other one provides a loyalty points scheme for our customers.
The problem is when I edit an order (shipping cost) and the customer has used some of his loyalty points (100 points = £1.00) and save the order, the points value redeemed are not calculated in the Grand Total which also affects the VAT (tax) calculation.
This makes sense as the order edit extension does not check for redeemed loyalty points.
Now i'm looking to possibly create my own 'bridging' extension that does check for redeemed points and recalculates the Grand Total when the order is saved.
As a classic ASP programmer, this is a whole different way of programming and I would be most grateful to receive advice on how to create this.
Thanks in advance for any help.
Andy