Can’t update select value from url query string

Hi!

I have a script that changes the “Subject” select field depending on the url query string. It works initially but then flicks back to the default once the page is fully loaded. It looks like the JS file wp-content/plugins/contact-form-7/includes/js/index.js is overriding it.

Any idea if there’s a way to fire my script once the cf7 script has fully loaded?

Many thanks for any suggestions.

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