diff --git a/doric-demo/src/ComplicatedDemo.ts b/doric-demo/src/ComplicatedDemo.ts
index 1de1bbac..1a94ab16 100644
--- a/doric-demo/src/ComplicatedDemo.ts
+++ b/doric-demo/src/ComplicatedDemo.ts
@@ -6,53 +6,58 @@ class MyDemo extends Panel {
     build(root: Group) {
         let refreshed: Refreshable
         let headerImage: Image
-        stack([
-            refreshed = refreshable({
-                onRefresh: () => {
-                    refreshed.setRefreshing(context, false)
-                },
-                header: pullable(
-                    stack([]).apply({
-                        backgroundColor: Color.RED,
-                        layoutConfig: layoutConfig().just(),
-                        width: 100,
-                        height: 30,
-                    }),
-                    {
-                        startAnimation: () => {
-                        },
-                        stopAnimation: () => {
-                        },
-                        setPullingDistance: (distance: number) => {
-                            headerImage.scaleX = headerImage.scaleY = (headerImage.height + distance * 2) / headerImage.height
-                        },
-                    }),
-                content: list({
-                    itemCount: 20,
-                    renderItem: (idx) => {
-                        return listItem(text({
-                            text: `Item :${idx}`,
-                            layoutConfig: layoutConfig().just(),
-                            width: root.width,
-                            height: 50,
-                            textColor: Color.WHITE,
-                            backgroundColor: colors[idx % colors.length],
-                        }))
+        stack(
+            [
+                refreshed = refreshable({
+                    onRefresh: () => {
+                        refreshed.setRefreshing(context, false)
                     },
+                    header: pullable(
+                        stack([]).apply({
+                            backgroundColor: Color.RED,
+                            layoutConfig: layoutConfig().just(),
+                            width: 100,
+                            height: 30,
+                        }),
+                        {
+                            startAnimation: () => {
+                            },
+                            stopAnimation: () => {
+                            },
+                            setPullingDistance: (distance: number) => {
+                                headerImage.scaleX = headerImage.scaleY = (headerImage.height + distance * 2) / headerImage.height
+                            },
+                        }),
+                    content: list({
+                        itemCount: 20,
+                        renderItem: (idx) => {
+                            return listItem(text({
+                                text: `Item :${idx}`,
+                                layoutConfig: layoutConfig().just(),
+                                width: root.width,
+                                height: 50,
+                                textColor: Color.WHITE,
+                                backgroundColor: colors[idx % colors.length],
+                            }))
+                        },
+                        layoutConfig: layoutConfig().most(),
+                    }),
                     layoutConfig: layoutConfig().most(),
+                }).also(v => {
+                    v.top = 200
                 }),
-                layoutConfig: layoutConfig().most(),
-            }).also(v => {
-                v.top = 200
-            }),
 
-            headerImage = image({
-                imageUrl: "https://img.zcool.cn/community/01e75b5da933daa801209e1ffa4649.jpg@1280w_1l_2o_100sh.jpg",
-                layoutConfig: layoutConfig().just(),
-                width: root.width,
-                height: 200,
-                scaleType: ScaleType.ScaleAspectFill,
-            }),
-        ]).in(root)
+                headerImage = image({
+                    imageUrl: "https://img.zcool.cn/community/01e75b5da933daa801209e1ffa4649.jpg@1280w_1l_2o_100sh.jpg",
+                    layoutConfig: layoutConfig().just(),
+                    width: root.width,
+                    height: 200,
+                    scaleType: ScaleType.ScaleAspectFill,
+                }),
+            ],
+            {
+                layoutConfig: layoutConfig().most()
+            }
+        ).in(root)
     }
 }
\ No newline at end of file