How to restrict fields in the configurable list widget?

I've already reviewed the instructions on how to setup a configurable list and those instructions do not address how to limit/restrict/format the number entry field. I need to restrict commas in dollar amounts and include a dollar symbol. Right now I have some users entering commas, and others who are not. This is problematic when exporting the data for analysis and I need to make the entries consistently formatted. Can you help?

Here's my original question:

Is it possible on the number field to have it automatically enter a $ sign and comma for dollar amounts such as $500,000?

Currently we can only require the fields inside the configurable list.

It doesn't have an option to limit or restrict the format of the fields used.

If you want, we can forward a feature request to our developers to add this option to the configurable list. However, we cannot give you a time frame when this option would be implemented.

For the meantime, you may use the Form calculation widget. You can add the dollar sign in it and use the mathfunction commaseparate() to separate the numbers.

We will wait for your response.

Thank you.