I’m currently learning about Dynamics and trying to update a contact’s Preferred Contact Method field using only the emailaddress1 and telephone1 fields. When I select one of those options and fill in the corresponding field, the contact should be updated. However, I only get the exception message when I try to update the contact, otherwise, it should pop the exception message. Can you help me understand what might be causing the problem?

I done the next code, taking the value fo the field that im updating in the Preferred Contact Mtehod, and i don´t know where i´m i doing wrong:

using System;
using Microsoft.Xrm.Sdk;

namespace BasicPluginTwo
{
    public class ContactUpdatePlugin : IPlugin
    {
        public void Execute(IServiceProvider serviceProvider)
        {
            ITracingService tracingService = (ITracingService)serviceProvider.GetService(typeof(ITracingService));
            // Obtain the execution context from the service provider.
            IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));

            // The InputParameters collection contains all the data passed in the request.
            if (context.InputParameters.Contains("Target") && context.InputParameters["Target"] is Entity)
            {
                // Obtain the target entity from the input parameters.
                Entity entity = (Entity)context.InputParameters["Target"];


                // Verify that the entity represents a contact.
                if (entity.LogicalName != "contact") return;

                // Check if Preferred Contact Method, Email or Phone fields
                int preferredContactMethodOption = entity.GetAttributeValue<OptionSetValue>("preferredcontactmethodcode").Value;
                string email = entity.Contains("emailaddress1") ? entity.GetAttributeValue<string>("emailaddress1") : string.Empty;
                string phone = entity.Contains("telephone1") ? entity.GetAttributeValue<string>("telephone1") : string.Empty;

                // Validate fields based on Preferred Contact Method
                if ((preferredContactMethodOption == 2 && string.IsNullOrEmpty(email)) || (preferredContactMethodOption == 3 && string.IsNullOrEmpty(phone)))
                {
                    throw new InvalidPluginExecutionException("Preferred Contact Method requires a corresponding non-empty contact detail.");
                }
            }
        }
    }
}