diff --git a/ccm-cms-tinymce/src/main/resources/scripts/ccm-cms/tinymce/plugins/insertmedia.js b/ccm-cms-tinymce/src/main/resources/scripts/ccm-cms/tinymce/plugins/insertmedia.js
index 4d98b93f3..37d550a17 100644
--- a/ccm-cms-tinymce/src/main/resources/scripts/ccm-cms/tinymce/plugins/insertmedia.js
+++ b/ccm-cms-tinymce/src/main/resources/scripts/ccm-cms/tinymce/plugins/insertmedia.js
@@ -30,18 +30,88 @@ function openDialog(editor) {
 
     console.log("Opening dialog");
 
-    editor.windowManager.open(
-        {
-            body: [
-                {
-                    label: "Search term",
-                    name: "searchterm",
-                    type: "textbox"
-                },
-            ],
-            onsubmit: function(event) {
-
+    editor.windowManager.open({
+        body: [
+            {
+                items: [
+                    {
+                        label: "Search term",
+                        name: "searchterm",
+                        onPostRender: function()  {
+                            this.getEl().value = "Hello there";
+                        },
+                        type: "textbox",
+                    },
+                    {
+                        html: `<ul><li id="alpha">eins</li><li id="bravo">zwei</li></ul>`,
+                        onClick: function(event) {
+                            alert(`${event.target.id} clicked.`);
+                        },
+                        type: "container",
+                    }
+                ],
+                name: "insertmedia_dialog_container",
+                type: "container",
             },
-            title: "Insert media",
+        ],
+        onsubmit: function(event) {
+
+        },
+        // onPostRender: function(event) {
+        //     console.log(`this = ${this}`);
+        //     console.log(`this.getEl = ${this.getEl}`);
+        //     this.getEl("searchterm").value = "Hello there";
+        // },
+        title: "Insert media",
     });
+
+    console.log("Dialog opened.");
+    // const dialog = editor.windowManager.open(
+    //         body: [
+    //             {
+    //                 items: [
+    //                     {
+    //                         label: "Search term",
+    //                         name: "searchterm",
+    //                         type: "textbox",
+    //                     },
+    //                 ],
+    //                 name: "insertmedia_dialog_container",
+    //                 type: "container",
+    //             },
+    //         ],
+    //         onsubmit: function(event) {
+    //
+    //         },
+    //         onPostRender: function() {
+    //             this.getEl("searchterm").value = "Hello there";
+    //         },
+    //         title: "Insert media",
+    // );
+
+    // console.log("Dialog opened.");
+
+    // dialog.add(
+    //     [
+    //         {
+    //             label: "Group",
+    //             name: "group",
+    //             type: "textbox",
+    //         },
+    //     ],
+    // );
+    //
+    // console.log("Element added");
+
+    // dialog.insert([
+    //     {
+    //         label: "Group",
+    //         name: "group",
+    //         type: "textbox",
+    //     },
+    // ],
+    // dialog.items().length,
+    // false);
+    //
+    // console.log("element inserted");
 }
diff --git a/ccm-cms-tinymce/src/main/typescript.off/ccm-cms/ccm-cms-tinymce.ts b/ccm-cms-tinymce/src/main/typescript.off/ccm-cms/ccm-cms-tinymce.ts
index a4a617398..1fdbc60ae 100644
--- a/ccm-cms-tinymce/src/main/typescript.off/ccm-cms/ccm-cms-tinymce.ts
+++ b/ccm-cms-tinymce/src/main/typescript.off/ccm-cms/ccm-cms-tinymce.ts
@@ -10,7 +10,7 @@ tinymce.PluginManager.add("ccm-cms-insertmedia",
             text: "Insert media",
             icon: false,
             onclick: function() {
-                openDialog(editor);
+                const dialog = openDialog(editor);
             }
         }
     );