Callback through multipage

Hi,

I would like to code a multipage app, using this documentation https://dash.plotly.com/urls with the second example presented. What I try to do is to set a value in the first page, and use it in the second page. I have tried to store it like in the “Example 1” of this documentation https://dash.plotly.com/sharing-data-between-callbacks , as a hidden div. But I can not manage to pass the callback to the second layout. What did I miss ? Is it possible with these simple ways ? Where can I find a quick example of a callback from a page updating an element from another page ?

Thanks,
Bill

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