diff --git a/src/Apis/CustomersApi.cs b/src/Apis/CustomersApi.cs
index e04083f..0ae78e5 100644
--- a/src/Apis/CustomersApi.cs
+++ b/src/Apis/CustomersApi.cs
@@ -1,4 +1,5 @@
 using Asp.Versioning;
+using Asp.Versioning.Builder;
 using Mapster;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Http;
@@ -23,10 +24,13 @@ public void Register(IEndpointRouteBuilder builder)
           summary: "Customers",
           description: "Customers that we can apply projects and tickets."));
 
-
     group.MapGet("", GetAll)
       .Produces<List<Customer>>(200, "application/json", "text/xml");
-    group.MapGet("{id:int}", GetOne).WithName("GetOneCustomer");
+    group.MapGet("{id:int}", GetOne)
+      .WithName("GetOneCustomer")
+      .MapToApiVersion(new ApiVersion(2.0));
+    group.MapGet("{id:int}", GetOne10)
+      .MapToApiVersion(new ApiVersion(1.0));
     group.MapPost("", Post);
     group.MapPut("{id:int}", Update);
     group.MapDelete("{id:int}", Delete);
@@ -59,6 +63,26 @@ public static async Task<IResult> GetOne(BillingContext ctx, int id, bool includ
     return Results.Ok(result);
   }
 
+  // Get One
+  public static async Task<IResult> GetOne10(BillingContext ctx, int id)
+  {
+    var result = await ctx.Customers
+      .Where(c => c.Id == id)
+      .Select(c => new
+      {
+        c.Id,
+        c.CompanyName,
+        c.Contact,
+        c.PhoneNumber
+      })
+      .FirstOrDefaultAsync();
+
+    if (result is null) return Results.NotFound("No customer with that id Exists");
+
+    return Results.Ok(result);
+  }
+
+
   // Create
   public static async Task<IResult> Post(BillingContext ctx, Customer model)
   {
diff --git a/src/Services/AcceptHeaderApiVersionReader.cs b/src/Services/AcceptHeaderApiVersionReader.cs
index b2779f0..3c8fc3e 100644
--- a/src/Services/AcceptHeaderApiVersionReader.cs
+++ b/src/Services/AcceptHeaderApiVersionReader.cs
@@ -14,7 +14,7 @@ namespace RestDesign.Services
   public class AcceptHeaderApiVersionReader : IApiVersionReader
   {
     // looking for application/vnd.wilderminds.arest-v2+json
-    private const string Pattern = @".wilderminds.arest-v(\d+(\.\d+)?)\+\S+$";
+    private const string Pattern = @".design.rest-v(\d+(\.\d+)?)\+\S+$";
 
     public void AddParameters(IApiVersionParameterDescriptionContext context)
     {
diff --git a/src/test.rest b/src/test.rest
index 950a69d..6c49307 100644
--- a/src/test.rest
+++ b/src/test.rest
@@ -5,20 +5,14 @@ Accept: application/json
 
 ###
 
-GET http://localhost:5000/api/customers
+GET http://localhost:5000/api/customers?v=1.0
 Accept: application/json
 
 ###
 
-GET {{root}}/regions 
-Accept: application/json
-
-###
+GET http://localhost:5000/api/customers/9
+Accept: application/vnd.design.rest-v2+json
+#X-Version: 2.0
 
-GET {{root}}/sites
-Accept: application/json
 
 ###
-
-GET {{root}}/sites/1457 
-Accept: application/json