Autofill with int

Autofill works fine. Please, explain what you do in more detail.

There is no more detail, I just want to use autofill.
So as said I have a lookup field with titles and values from another table. When selecting one of these I want to fill another field INT of the current table. That's it,nothing more that I can explain.
Do all the fields that you want to autofill need to be on the add/edit page?
Cheers,

Strange question. Autofill is an AJAX call, if the target field is on the add/edit page, it will be filled.

If the target field (the field that you want to autofill) is not on the add/edit page, what do you autofill ?

Well,
I thought it would fill the fields you select on the background without the need to have them on the page (a normal use case scenario because you can pick target fields). So I need to add my INT field, can it be readonly?
I actually think I tried that but will do again.
Cheers,

Tried it again and put in on the page but no luck. Also no error messages when I debug in the browser. For sure both fields are INT and the one I select in the dropbox has a value.
Cheers,

Could a Javascript OnLoad event on another field be the problem?

Yes, it can be readonly. Changing the dropdown value the readonly field will not show the int value but it will be saved in the db.

When you change the dropdown value, in the firebug console, you should see an AJAX GET request. Check the corresponding answer from the server.

Well, I discovered the problem. The dropdown autofill does not like code in the Javascript OnLoad. Although I check an onChange on another dropdown this influences also my autofill.
BTW, tested readonly without all my code but that does not work for me.
Anyway, will try to solve it myself.

Very strange. Every element in the page has a different selector, so the onChange event on another dropdown shouldn't influence the autofill.

It's hard to say what's happening if I don't see your code.