I need my WordPress plugin modified

The plugin GravityView for WordPress shows GravityForms-posts in front end. I need help modifying the plugin GravityView. I want the list-item-value in my GravityForm to be set as the class of the li-tag. (<li class="VALUE">) The class-value should be changed to something more code-friendly, for example: <li class="bo-pa-hastgard">Bo på hästgård</li> (view img-0) This is the project URL: [login to view URL] and we want to modify the content in the column called VAD VI ERBJUDER. I have talked to the support team at GravityView and they can't help us make a customisation. Here is the conversation we had: GravityView: I'm afraid it is not possible to target the list item with the gv_class() function. Sorry for the inconvenience. If you know how to program and would like to customise the output of the list field, you can override our template for it. You can learn more about it in this article. The List field template is located at wp-content/plugins/gravityview/templates/fields/[login to view URL] GoldLife: So if I want to add the value from each list item as a class to the li-list items. Form field in the Gravity form: Värde = Value (Will change them to a more code-friendly names) (View img-1) Which code to add here to add <li class="{value}">Name</li> (View img-2) GravityView: Instead of echo, you'd have to intercept the return of the GravityView_Field_List::column_value function on line 32 and manipulate it to change it the way you want, and then echo it.