How to make a calculation and pass it to a payment field.

I can't make calculations work at all. I've tried everything, What am I missing?

I have two areas on my form using radio buttons ( one is showing on the screen shop, the other isn't)

I have also set the value properties (without dollar signs) in the boxes 

The calculation box does nothing when I make my selections.

Can you help?

Thanks,

Lou

Looks like you have solved it, I checked your form and it calculates correctly:

Open a new thread if you need anything else, we will be glad to assist you.