Slider with calculated results widget: how to pass the total price to a payment field?

Hi. I would like to make a form in which the client can select the measure and pay directly with Paypal from the form. The price in Paypal should be the one that appears after calculating it.

You need to get the total in a Form Calculation widget: https://www.jotform.com/help/259-How-to-Perform-Form-Calculation-Using-a-Widget, and make sure to hide it: https://www.jotform.com/help/434-How-to-Hide-Form-Fields 

Example:

Finally, pass the total from this calculation widget to your payment form: https://www.jotform.com/help/275-How-to-Pass-a-Calculation-to-a-Payment-Field 

Test my form example here: https://form.jotform.com/80235024026948 

Let us know if you need more help.