diff --git a/examples/validation/discussion/328.py b/examples/validation/discussion/328.py
new file mode 100644
index 00000000..ded65633
--- /dev/null
+++ b/examples/validation/discussion/328.py
@@ -0,0 +1,155 @@
+import plotly.graph_objects as go
+import plotly.express as px
+
+from trame.app import get_server
+from trame.ui.vuetify import SinglePageWithDrawerLayout
+from trame.widgets import vuetify, plotly
+
+server = get_server()
+state, ctrl = server.state, server.controller
+
+
+def contour_plot():
+    """https://plotly.com/python/contour-plots/"""
+    return go.Figure(
+        data=go.Contour(
+            z=[
+                [10, 10.625, 12.5, 15.625, 20],
+                [5.625, 6.25, 8.125, 11.25, 15.625],
+                [2.5, 3.125, 5.0, 8.125, 12.5],
+                [0.625, 1.25, 3.125, 6.25, 10.625],
+                [0, 0.625, 2.5, 5.625, 10],
+            ]
+        )
+    )
+
+
+def bar_plot(color="Gold"):
+    return go.Figure(data=go.Bar(y=[2, 3, 1], marker_color=color))
+
+
+def scatter():
+    df = px.data.iris()
+
+    fig = px.scatter(
+        df,
+        x="sepal_width",
+        y="sepal_length",
+        color="species",
+        title="Using The add_trace() method With A Plotly Express Figure",
+    )
+
+    fig.add_trace(
+        go.Scatter(
+            x=[2, 4],
+            y=[4, 8],
+            mode="lines",
+            line=go.scatter.Line(color="gray"),
+            showlegend=False,
+        )
+    )
+
+    return fig
+
+
+card_config = {}
+
+card_config["plots"] = {
+    "type": "figure",
+    "plot_list": [
+        {"text": "Contour", "value": contour_plot},
+        {"text": "Bar", "value": bar_plot},
+        {"text": "Scatter", "value": scatter},
+    ],
+    "title": "Plots",
+}
+
+card_config["else"] = {
+    "type": "figure",
+    "plot_list": [
+        {"text": "Bar", "value": bar_plot},
+        {"text": "Contour", "value": contour_plot},
+        {"text": "Scatter", "value": scatter},
+    ],
+    "title": "Else",
+}
+
+
+def on_event(type, e):
+    print(type, e)
+
+
+def _ui_card(title, ui_name):
+    with vuetify.VCard(v_show=f"active_ui == '{ui_name}'"):
+        vuetify.VCardTitle(
+            title,
+            classes="grey lighten-1 py-1 grey--text text--darken-3",
+            style="user-select: none; cursor: pointer",
+            hide_details=True,
+            dense=True,
+        )
+        content = vuetify.VCardText(classes="py-2")
+    return content
+
+
+def add_card(key, value):
+    with _ui_card(value["title"], key):
+        with vuetify.VList(rounded=True):
+            with vuetify.VListItemGroup(
+                v_model=("active_plot", "Contour"), color="primary", mandatory=True
+            ):
+                for key in value["plot_list"]:
+                    with vuetify.VListItem(value=key["text"]):
+                        with vuetify.VListItemContent():
+                            vuetify.VListItemTitle(key["text"])
+
+
+@state.change("active_plot")
+def update_plot(active_plot, **kwargs):
+    if state.active_ui:
+        for item in card_config[state.active_ui]["plot_list"]:
+            if item["text"] == active_plot:
+                ctrl.figure_update(item["value"]())
+
+
+@state.change("visualization_mode")
+def __update_mode(visualization_mode, **kwargs):
+    for key in card_config.keys():
+        if visualization_mode == key:
+            state.active_ui = key
+    state.active_plot = card_config[state.active_ui]["plot_list"][0]["text"]
+    update_plot(state.active_plot)
+
+
+state.trame__title = "Plotly"
+
+with SinglePageWithDrawerLayout(server) as layout:
+    layout.title.set_text("trame ❤️ plotly")
+
+    with layout.drawer:
+        with vuetify.VRadioGroup(
+            v_model=("visualization_mode", next(iter(card_config))),
+            classes="ml-4",
+            height=100,
+        ):
+            for key, value in card_config.items():
+                vuetify.VRadio(label=value["title"], value=key)
+        for key, value in card_config.items():
+            add_card(key, value)
+    with layout.content:
+        with vuetify.VContainer(fluid=True):
+            with vuetify.VRow(dense=True):
+                vuetify.VSpacer()
+                figure = plotly.Figure(
+                    display_logo=False,
+                    display_mode_bar="true",
+                    # click=(on_event, "['selected', utils.safe($event)]"),
+                    # hover=(on_event, "['hover', utils.safe($event)]"),
+                    # selecting=(on_event, "['selecting', $event]"),
+                    # unhover=(on_event, "['unhover', $event]"),
+                )
+                ctrl.figure_update = figure.update
+                vuetify.VSpacer()
+
+if __name__ == "__main__":
+    server.start()