class YourFundingController {

    @PostMapping(params = {"add_cost", "grantClaimPercentage"})
    public String addFundingRowFormPost(Model model,
                                        UserResource user,
                                        @PathVariable long applicationId,
                                        @PathVariable long sectionId,
                                        @PathVariable long organisationId,
                                        @ModelAttribute("form") YourFundingPercentageForm form) {

        saver.addOtherFundingRow(form);
        return viewYourFunding(model, applicationId, sectionId, organisationId, user);
    }

}