Retrieve ID of a saved database record

Hi all.
I made a simple form that saves data in a db. It works perfectly.
I need to call a php file with the ID of the corrisponding saved record ID: load.php?id=XX
Using the debugger I've seen that the ID (23) of the saved record is conatined in the "save_data_20" array :

Array
(
    [save_data_20] => Array
        (
            [result] => Data saved successfully!
            [dataset] => Array
                (
                    [option] => com_chronoforms7
                    [cont] => manager
                    [chronoform] => ControlloCF
                    [gpage] => end_page
                    [IMP_CdFis] => 00000123456
                    [IP_RicCdFis] => MRYWLM80A01H501H
                    [IP_RicDtSogg] => Mario Rossi
                    [IP_RicDataN] => 17/05/2022
                    [__cf_token] => 250ed622-a766-483d-a4b3-39f09ac7c520
                )

            [log] => Array
                (
                    [0] => INSERT INTO `pratiche` (`IMP_CdFis`, `IP_RicCdFis`, `IP_RicDtSogg`, `IP_RicDataN`)  values  ('00000123456', 'MRYWLM80A01H501H', 'Mario Rossi', '17/05/2022');
                )

            [var] => Array
                (
                    [IMP_CdFis] => 00000123456
                    [IP_RicCdFis] => MRYWLM80A01H501H
                    [IP_RicDtSogg] => Mario Rossi
                    [IP_RicDataN] => 17/05/2022
                    [id] => 23
                )

        )

    [php_27] => Array
        (
            [returned] => NULL
            [var] => NULL
        )

)

I tried several ways but I cannot rertieve the "id" value in order to use it in a php action.
Any suggestion?
Thanks

Hi,
​
Would you mind telling me how you saved the data in the DB with your form, I'm having trouble figuring it out.
​
Many thanks,
​
Gillian