UTL_SMTP with multibyte

Oracle 19c, windows

I have a procedure that I use to test utl_smtp package. I have 2 options

If I use 0 in my call, I put the text in variables any other value

select from a table.

if vtype = 0 then 

 lv_subject := 'My Subject ÅÄÖ';

 lv_message := 'My Message åäö';

 else

  select h,b into lv_subject,lv_message from mail_test_tab where no = 1;

 end if;

My problem is that when I select from the table my ÅÖÄ characyers are not presented

properly, but they are if I assign the text directly to the variables.

Database has we8mswin1252 character set, column is varchar2.