diff --git a/AlgebraicDataflowArchitectureModel/models/SimpleUI.model b/AlgebraicDataflowArchitectureModel/models/SimpleUI.model
index f393c9d..584d8e3 100644
--- a/AlgebraicDataflowArchitectureModel/models/SimpleUI.model
+++ b/AlgebraicDataflowArchitectureModel/models/SimpleUI.model
@@ -17,3 +17,15 @@
 native channel TextEvent(wid: Str) {
 	out screen.widgets.{wid}.text(curText: Str, textEvent(nextText)) = nextText
 }
+
+channel AddButton {
+	out screen.widgets(widgets: Map, addButton(wid: Str, text: Str)) = insert(widgets, wid, {"type": "button", "text": text, "state": 0})
+}
+
+channel AddLabel {
+	out screen.widgets(widgets: Map, addLabel(wid: Str, text: Str)) = insert(widgets, wid, {"type": "label", "text": text, "state": 0})
+}
+
+channel AddInputText {
+	out screen.widgets(widgets: Map, addInputText(wid: Str)) = insert(widgets, wid, {"type": "inputText", "state": 0})
+}