private void ExecutePlugin(IPluginExecutionContext context, IOrganizationServiceFactory serviceFactory, IOrganizationService service, ITracingService tracing)
        {
            //var target = (???)context.InputParameters["Target"];
            //var preEntity = (Entity)context.PreEntityImages["PreImage"];
            //var postEntity = (Entity)context.PreEntityImages["PostImage"];
            //YOUR PLUGIN-CODE GO HERE
            WhenALeadQualify(context, serviceFactory, service, tracing);
        }

        private void WhenALeadQualify(IPluginExecutionContext context, IOrganizationServiceFactory serviceFactory, IOrganizationService service, ITracingService tracing)
        {
            var target = (Entity)context.InputParameters["Target"];
            var account = new Shared.Entities.Account(target);//Bind account entity to Account Strong Type Late Bound by PL.DynamicsCrm.DevKit
            if (account.OriginatingLeadId != null) //check this field to make sure Account created by Qualify Lead
            {
                //Reading mapping Lead fields
                var fetchData = new
                {
                    leadid = account.OriginatingLeadId.Id
                };
                var fetchXml = $@"
<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'>
  <entity name='lead'>
    <attribute name='leadid'/>
    <attribute name='paz_field3'/>
    <attribute name='paz_field2'/>
    <attribute name='paz_field1'/>
    <filter type='and'>
      <condition attribute='leadid' operator='eq' value='{fetchData.leadid}'/>
    </filter>
  </entity>
</fetch>
";
                var rows = service.RetrieveMultiple(new FetchExpression(fetchXml));
                if (rows.Entities.Count == 0) return;//Lead not found
                var lead = new Shared.Entities.Lead(rows.Entities[0]);//Bind lead entity to Lead Strong Type Late Bound by PL.DynamicsCrm.DevKit
                account.paz_Field1 = lead.paz_Field1;
                account.paz_Field2 = lead.paz_Field2;
                account.paz_Field3 = lead.paz_Field3;
            }
        }

        public void PreAccountCreate_Test_WhenALeadQualify()
        {
            //prepare data
            //1. Lead
            var LEAD_ID = Guid.Parse("{00000000-0000-0000-0000-000000000001}");
            var lead = new Entity("lead");
            lead["leadid"] = LEAD_ID;
            lead["paz_field1"] = "abc";
            lead["paz_field2"] = null;
            lead["paz_field3"] = "def";

            //2. target
            var target = new Entity("account");
            target["originatingleadid"] = new EntityReference("lead", LEAD_ID);

            //setup
            Context.ProxyTypesAssembly = Assembly.GetAssembly(typeof(ProxyTypesAssembly));
            Context.Data.Clear();
            Context.Data.Add("lead", new Dictionary<Guid, Entity> {
                { LEAD_ID, lead }
            });
            PluginContext.InputParameters["Target"] = target;
            //run
            Context.ExecutePluginWithConfigurations<PreAccountCreateSynchronous>(PluginContext, null, null);
            //result
            var result = PluginContext.InputParameters["Target"] as Entity;
            var account = new Shared.Entities.Account(result);
            Assert.AreEqual(account.paz_Field1, "abc");
            Assert.AreEqual(account.paz_Field2, null);
            Assert.AreEqual(account.paz_Field3, "def");
        }