[Dbix-class] Getting primary key (id) after populate

[Hetényi Csaba]

Dear friends

Sorry for newbie question!
I'd like to know, how to get the last inserted row's primary key after a 
populate?
I have the following code in a Catalyst app (it inserts data to related 
tables too, but in the main table: FoldkHrsz only one row):

# DB Populate
my $hrsz_res = $c->model('DB::FoldkHrsz')->populate([
         {
         %$hrsz_data,
         foldk_alreszlets => \@$alreszlet_AoH,
      foldk_szeljegyzetts => \@$szeljegyzett_adat_AoH,
      foldk_szolgalmis => \@$szolgalmi_adat_AoH,
      foldk_tulajs => \@$tulaj_adat_AoH,
      foldk_jogok_tenyeks => \@$jogok_tenyek_adat_AoH
        },
     ]);

After this, if i try to get the last inserted row's PK with this:

$hrsz_res->id;

..gives an error:
"Can't call method "id" on unblessed reference at ..."

I know, that the populate method's result is:
\@result_objects (scalar context) | @result_objects (list context)
but don't know, how to use them?

Thank You in advance!
Best wishes from Hungary.

Csaba Hetenyi