diff --git a/app/docs/demo.meta.tree b/app/docs/demo.meta.tree
index 883262772fc..e00048ef7d6 100644
--- a/app/docs/demo.meta.tree
+++ b/app/docs/demo.meta.tree
@@ -88,6 +88,7 @@ include \/mol/list/demo
 include \/mol/list/demo/table
 include \/mol/list/demo/tree
 include \/mol/map/yandex/demo
+include \/mol/mutable/demo
 include \/hyoo/marked/demo
 include \/hyoo/harp/demo
 - include \/mol/message/demo
diff --git a/mutable/demo/demo.view.tree b/mutable/demo/demo.view.tree
new file mode 100644
index 00000000000..f41d7859feb
--- /dev/null
+++ b/mutable/demo/demo.view.tree
@@ -0,0 +1,14 @@
+$mol_mutable_demo $mol_example_code
+	code? \
+		\const person = [{id: '10', name: 'Jhon'}, false]
+		\
+		\const mut = $mol_mutable(person)
+		\
+		\mut[1].id(v => '42')
+		\mut[1].name(() => 'Dave') 
+		\mut[2]((v) => !v)
+		\
+		\const next = mut()
+	aspects /
+		\Mutable
+		\Array