Countdown timer per Quiz question

Hi,

I have a quiz (Captivate 9 - responsive) with a couple of questions and incorrect/correct feedback.

For every quiz question I am using the setting "Time limit" and Timeout Caption.

I want the users to see how much time remains for that question.

What have I done:

- I have added a textbox with a variable

- Via Javascript I can show the countdown time in this textbox.

The javascript starts 'On Enter' of the slide.

That works fine. Only problem: when the user clicks the submit button before the time limit, the countdown counter continues. It should pause. But the the actions under 'On Success' and 'Last attempt' only execute AFTER the user clicks on the Correct/Incorrect caption, so no effect adding Javascript there. I need to execute code WHEN the user clicks the Submit-button. But that isn't possible.

Any ideas?

(The built-in Hourglass interaction doesn't do it for me)

Thanks

Christophe