display ERR_CACHE_MISS when user click back button

Hi,
i want dispay ERR_CACHE_MISS when user click back button after send form with pdf inline. How to?

Hi univ,
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Sorry I don't understand your question, please can you explain a bit more.
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Bob

When he clicks "back" he wants to force Chrome (or whatever) to display the "confirm form resubmission" error page. Like this. Dunno why.

Right!
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How to?

No idea. Not sure if you can nor why you would want to.

Hi univ,
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Ditto to healyhatman's reply. What exactly do you need to do here?
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Bob

This is scenario:
user fill out the form, click sumbit and get pdf.
He see mistake and push browser back button with some hidden filed empty*.
He click again submit and get message error because i do checks with Event switcher...
User call me....
I want prevent this! User must view err_cache_miss and not form with some full fields and others empty*
I could also provide the loading of the form but never check javascript or php works
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*fields are empty because in this case javascript has not works.

Hi univ,
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I would change the form to save the PDF to the server and then provide a page with a download link in place of the automatic download. You can add an Edit or Back button to that page in case changes are needed.
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It might also be helpful to add a Confirmation page so that the user can review the data before the pdf is created.
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Bob

If you use a redirect action it should clear all the data so they can't resubmit accidentally

i've confirmation page.
How i can use redirect? javascript and php in that case doesn't work because the page i cached.
thanks

how to configure redirect action if user has pushed browser back button?
thanks

After successful submission use a redirect action, available in the setup tab, to redirect to for example a "success" event that displays a success message