I need help with visual basics. I have several text boxes and labels Quantity, price, subtotal, sales tax, shipping and the total. The total will not add together when I hit next item, However, my subtotal keeps a running total, But I also need it to keep adding up the total.

'this line calculates the subtotal before taxes and shipping

sngSubTotal = sngQuantity * msngQuiltCost 'this line calculates the sales tax based on the tax rate constant sngSalesTax = sngSubTotal * CSngSalesTax

'this line caluclates the total for the order sngTotal = sngSubTotal + sngSalesTax + sngShipping

I want the final total output of the quantity of items ordered

Quantity Quilt Price Color Sub Total Sales Tax Shipping Total Sub Total Sales Tax Shipping Order Total Next ltem Number Of Sales Today Clear Clear All Exit Todays GrandTotal