How to change a variable (i.e. price assigned to a field) value so the form will calculate correctly?

Regarding my Tartan Ball form:  https://form.jotform.com/52806647955973

The price for Members and for non-Members has gone up. How can I change the values that calculate the total to pay? I thought when I got the dialogue shown in the attached screen shot it would be a simple mater to delete one number and insert another. But this dialogue will only accept additions, not edits.  

My calculation should be $ How many Members 0-9 * 135 +

How Many non-Members 0-9 * 150

Help, Please.

Less important but still needing fixed: the form insists on placing the words 2016 Tartan Ball at the very bottom but I cannot find where that notation is coming from. I changed all of my fields to 2017 Tartan Ball.

Thanks,

Rob Lockhart

Please check this example on how to update the price value:

On regards of updating the words "2016 Tartan Ball", here is how:

Let us know if you need more help, we will be glad to assist you.