Integrate an URL variable to my typeform results

Hello,
I’ve been asked to integrate a dynamic element that will be present in the URL of my typeform and make it appear in the Results tab as if it was a field.

For example if my typeform URL is “xxxx.typeform.com/variable=12345/xxxx

I’d like to collect that “12345” and have it as a field column in my results.

Keep in mind that I’m not the one adding this “12345” manually to the URL, and the number can be different every time but it will always be formatted in the same way (in the example : variable=12345) since it’s collected from another website which redirects to my typeform. 

Is it possible to do so, and if yes, how should I proceed ?

Thanks