Separating Javis.jl `Video` and `Object` two different blocks in Pluto

Question

I am trying to learn Javis.jl with Pluto notebooks. While doing the tutorial, I tried separating the Video object and the Object in different Pluto blocks, as shown:

md"""
Some md here
"""
begin
    myvideo = Video(500, 500)
    Background(1:70, ground)
end

md"""
Some markdown here. Separate block.
"""

begin
    red_ball = Object(....)
    blue_ball = Object(....)
end

which shows me an error saying

A `Video` must be defined before an `Object`

var"#Object#10"(::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}}, ::Type{Javis.Object}, ::Symbol, ::Function, ::Luxor.Point)@Object.jl:77
...

This error does not occur if I put the myvideo and the Background in the same begin...end block as the red_ball and blue_ball.

Upon source code inspection, calling Video() sets a global variable in the environment so it is not clear to me how this happened.

Any ideas on what could be the problem? Thanks.

Answer 1

I am not 100% sure but I think it might be because Pluto creates a different Module for each cell, so perhaps the Object can't see the right CURRENT_VIDEO constant from the other cell.

If I can ask you, why do you want to use different cells?