Pre-fill form field via GET

Hi all, in a registration form I’d like to pre-fill some form fields with specific values; I have built some custom links including such values in a table.

Example: https://mysite.org/insert-new/?id_project=1&param2=something&param3=something-else
The best option would be if I could pre-fill some fields with a lookup value, for example instead of the simple id_project, but this is not strictly required.

I have already tried with a lookup “WHERE id_project=httpGet[‘id_project’]”, but it doesn’t work.

How can I take these values and put in corresponding form fields?

Thanks,
Monica