How do you get around the 32760 char PL/SQL limit for Long fields in Forms?

In Forms I need to copy the contents of a field (defined as a clob in the database) on the database block into a field on a non-database block (where the user will edit it as needed) and then copy it back to the database block field when done. This works fine, except when the length is more than 32760 characters (the PL/SQL limit). How can I make this work?

I'm using Forms 10gR2.

Thanks,

Dan