Then we will need to look at a very minimal sample of your call to AddMember and how you retrieve the data from the database again. For example, the following program will insert data into the database:

# Use whatever modules KOHA needs:
use ...;
AddMember(
    firstname => 'scolife',
    lastname  => "scolife's last name",
    ...
);
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If that program works, then you will need to find out what makes your data in %newdata different from what you pass explicitly. I suggest getting an output via Data::Dumper:

use Data::Dumper;
print Dumper \%newdata;
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