Setting a Counter widgets ending number using a Shortcode?

[Paws]

I have a page where I want to display a hidden form field value on the Elementor counter widget as its ending value using the 'Dynamic' value feature.

I'm not a coder and wonder if there is way to do this that I'm currently missing?

Could someone explain what needs to go in the shortcode box that appears when I click the spanner in the counter widget to use a site > shortcode as the ending value for the counter? I simply want to display a value in a field elsewhere on the page on the counter. Any help gratefully received