@Externalizer does not work on persist?

[Stefan Handschuh]

Everytime I try to persist an object which contains a field with a
"@Externalizer"-tag, I get a ClassCastException.

You may stick to the doc to reproduce:


@Persistent
@Externalizer("toString")
private MyObject someObject;


The database-field is created correctly but on-persist the
ClassCastException "could not cast from MyObject to String"

Can someone reproduce this?

Thanks!