Stop form after a certain date

I have an event registration form with chronoforms v6 and would like to have add the functionality, that the form will not be displayed after a certain date, which I load with Read Data from the DB.
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Then I could add an if-then statement:

if(time() >= strtotime($this->get("read_data3.title.enddate"))) { STOP COMMAND }

Which command could have the effect to stop the form from being displayed and instead to display custom code ?

Any help is appreciated.

Use a PHP block with

return time() >= strtotime($this->get("read_data3.title.enddate"));

Then a switch with data source set to

{fn:your_php_block}{var:your_php_block}

Then do something like this

true:{event:show_form_unavailable_page}
false:{event:load_form}

Could you perhaps solve this with an Event Switcher in the actions ?

For some reason I thought this was in Chronoconnectivity. Yes, do it with an event switcher.

Thanks for your answers.
Can you give me a hint how to do it with an Event Switcher. I haven't used it yet, so I don't fully understand its functionallity.
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Thank you

Sure set your events to true, false. Display the form in false, display an error in true. Or the other way around whatever makes sense

Hi
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I didn't succeed in figuring it out.
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My thoughts:
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I have a PHP block named "date-to-deactivate" I call the date from my DB (+3 days = 259200sec):

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In event switcher I have

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But no effect.
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What did I miss?

Try "true, false"

Try "true, false"

instead of "1,0"?
No difference.

{fn:} is something used in Chronoconnectivity, you should be using {var:}
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Also you can simplify it a little with
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return time >= strtotime($this->get("read_data3.title.enddate") . " + 3 days"));

Edited