What does copy field value logic means?

and what is mean by this logic?

Hi Ayman,

Thanks for reaching out to Jotform Support. That condition passes the value from the first field to another field. Using your example from the original thread, if Option 1 is selected in Question 1 and you’ve set up that condition, then Option 1 will already be preselected in Question 2. Check out the screencast below to see how it works:

Let us know if there’s anything else we can help you with.