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I would just like to confirm if you are looking to capture the value across different field on your form and then pass them over or if you are wondering how to setup the payment processing tool instead?
Once we know more we would be happy to assist with the same.
The page I'm building is for meal delivery shop. I have set up 15 option's. Each item might cost different amounts. I would like to put the amount next to the line item; Ex.: Option 3: 1 serving of chocolate cake, 50.pesos. (I'm trying not to use the drop down 'options')
When the customer selects the item, I'd like it to start a running total; so before the customer hits the 'Submit' the will know the total amount owed.
You might do the same in different ways, depending on the preferred layout.
I believe that what you are after you could do through the payment processing tool alone.
For example add all the options and then set up sub options.
You can see more about that here:Create Sub-Products Based on a Product Option
First I do however recommend checking out the following: Setting Up Your First Order Form
The payment tool will calculate the total for you as you go through the form, including the shipping, coupons and any other details that you might set up.
Of course, we are here and happy to assist if you happen to have any additional questions.