Access memo field > 255 and cached update

Hi,

I am using Delphi 5.01 with MsAccess97 and BDE.
I have a table with a memo field  and cached update.
When I try to update this filed with length more than 255,
occur an "C++ exception", and the field is not updated.

Anyone know anything about this problem ?

Thanks,

Bruno A. Chiericatti