public virtual async Task<IActionResult> ValueDelete(int id)
{
if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.ManageSettings))
return AccessDeniedView();
//try to get a customer attribute value with the specified id
var customerAttributeValue = await _customerAttributeService.GetCustomerAttributeValueByIdAsync(id)
?? throw new ArgumentException("No customer attribute value found with the specified id", nameof(id));
await _customerAttributeService.DeleteCustomerAttributeValueAsync(customerAttributeValue);
//activity log
await _customerActivityService.InsertActivityAsync("DeleteCustomerAttributeValue",
string.Format(await _localizationService.GetResourceAsync("ActivityLog.DeleteCustomerAttributeValue"), customerAttributeValue.Id),
customerAttributeValue);
return new NullJsonResult();
}