Interact.jl in Jupyter Notebook and Julia 1.7.3 kernel does not show the slider

[Freya_the_Goddess]

Hi all,

I try this GitHub - JuliaGizmos/Interact.jl: Interactive widgets to play with your Julia code

this is the code:

using Interact, DynamicalSystems, Plots

@manipulate for px=0:0.01:.3, py=0:0.01:.3,
    plane = Dict("x=0" => 1, "y=0" => 2)
    psos = poincaresos(
    Systems.henonheiles(),
    (plane, 0), 10000;
    u0 = [0., 0., px, py])
    
    vbox(vskip(1em),
    md"*Poincaré surface of section of Hénon–Heiles system*",
    vskip(1em),
    scatter(psos[:, [2,1][plane]], psos[:, [4,3][plane]],
            linewidth=0.1, markersize=2, markerstrokewidth=0,
            xlimit=[-1/3,1/3], ylimit=[-1/3,1/3],
            markercolor="#F35700"))
end

and then the plot shows but there is no interactive slider there: