docs: function handleDatabeforeSubmission($thisForm, amount, event) {
        var currency = $thisForm.find("option:selected").val();
        var givingType = $thisForm.data('giving-type');
        var cartId = $thisForm.data('cart-id');
        var clientId = $thisForm.data('client-id');
        var rowID = $thisForm.parents('.paragraph--membership-signup').attr('id');
  
        /* Send data */
        if (validateAmount(amount)) {
          $thisForm.find(".form-error").removeClass('show-error');
          nextStepHandler(event, currency, amount, givingType, cartId, clientId, rowID);
        } else {
          $thisForm.find(".form-error").addClass('show-error');
        }
      }