Solution Found: Quite usefull maybe?
Using "Adminify" I added this code to the footer
1) It hides the title and slug for the post.
2) it copies from the required field to the title input box.
NB: I will add page name based if statment to only activate on the correct page.
RESULT: "post select dropdown" now has the value of a field I need to display in the dropdown. 🙂
document.getElementById('post-body-content').style.height=0;
document.getElementById('post-body-content').style.padding=0;
document.getElementById('post-body-content').style.margin=0;
document.getElementById('name').addEventListener('keyup', function (event) { document.getElementById('title').value = event.target.value});
Best Rich