You cannot create a memo field *in a Form*. Forms don't contain
fields, and do not store data! Data is stored in Tables, using forms
as a tool.
If the table field is a Memo field, just be sure that neither the
table nor the form has any Format property set on the field; any
formatting will truncate the data to 255 bytes. Similarly, don't apply
any Input Mask.
John W. Vinson[MVP]