diff --git a/test-server/http.js b/test-server/http.js
index 7042bee..c4f3238 100644
--- a/test-server/http.js
+++ b/test-server/http.js
@@ -3,22 +3,31 @@ import { serve } from 'bun';
 
 serve({
   port: 5000,
-  fetch(request) {
+  async fetch(request) {
     console.log(`${request.method}: ${request.url}`);
     if (request.method === 'POST') {
       const url = new URL(request.url);
       let json;
       if (url.pathname === '/GetSVGLayoutConfiguration') {
-        json = JSON.stringify(GetSVGLayoutConfiguration());
-      } else if (url.pathname === '/FillHoleWithChassis') {
-        json = JSON.stringify(FillHoleWithChassis(request));
-      } else if (url.pathname === '/SplitRemplissage') {
-        json = JSON.stringify(SplitRemplissage(request));
+        json = GetSVGLayoutConfiguration();
+      } else if (url.pathname === '/ApplicationState') {
+        const bodyParsed = await request.json();
+        console.log(bodyParsed);
+        switch (bodyParsed.Action) {
+          case 'FillHoleWithChassis':
+            json = FillHoleWithChassis(bodyParsed);
+            break;
+          case 'SplitRemplissage':
+            json = SplitRemplissage(bodyParsed);
+            break;
+          default:
+            break;
+        }
       } else {
         // TODO: Return 404 rather than this
-        json = JSON.stringify(GetSVGLayoutConfiguration());
+        json = GetSVGLayoutConfiguration();
       }
-      return new Response(json, {
+      return new Response(JSON.stringify(json), {
         status: 200,
         headers: {
           'Content-Type': 'application/json',
@@ -108,18 +117,18 @@ const GetSVGLayoutConfiguration = () => {
 
 const FillHoleWithChassis = (request) => {
   const maxWidthChassis = 3000;
-  const nbChassis = Math.ceil(request.ContainerActions.Width / maxWidthChassis);
+  const nbChassis = Math.ceil(request.ContainerAction.Width / maxWidthChassis);
   const lstModels = [];
   for (let i = 0; i <= nbChassis; i++) {
     if (i === 1 && request.ContainerAction.ExistOnBefore) {
-      lstModels.Add({ Type: 'Dilatation' });
+      lstModels.push({ Type: 'Dilatation' });
     }
-    lstModels.Add({ Type: 'Chassis' });
+    lstModels.push({ Type: 'Chassis' });
     if (i < nbChassis) {
-      lstModels.Add({ Type: 'Dilatation' });
+      lstModels.push({ Type: 'Dilatation' });
     }
     if (i === nbChassis && request.ContainerAction.ExistOnAfter) {
-      lstModels.Add({ Type: 'Dilatation' });
+      lstModels.push({ Type: 'Dilatation' });
     }
   }
   return {