How to delete pages conditionally to a checkbox being checked ?

Hi, I have a pdf form that gives three options : phase one, phase two and phase three. Either choice generates different paths of form pages. But sometime, someone makes a mistake and then he clicks on a first option and then on a second. So, I need all checkboxes to delete the pages of the other path so there's no misunderstanding. However, because there are three options and not two, deleting pages based on there number in the row doesn't work because it will depend on what phase they will chose. So my question is the next, is there a way to delete pages based on the name of the templates of these pages and not the number of the pages ? And if so what is the code ?