**VickiH**One ckboc field has a +$15 fee for "C", next ckbox "A"field has 3 to select from a1,a2,a3, next ckbox "B" field has 3(or more) to select from, b1,b2,b3 to be deducted from total. What functions are used? Like excel? thanks for anyhelp.

- JotForm UI Developer
**mert**As far as I understand from your form, you did everything correctly to achieve the scenario you mentioned by using the "Update/Calculate a Field" conditions. Alternatively, you can also do it by using the "Form Calculation" widget; but you have already done it.

However, I realized the total of the discount is not showing properly when three of them selected. So, you can use the "Form Calculation" widget for this one. After adding the widget, the setup for it should be like the following:

Also, you can see the results from the screen recording below:

If this is not the case, could you please explain your question in more details? So, we can help you better.

Waiting for your response.