How do I store or retrive information in fields that are marked with the flags "sys+bin", (0x01 + 0x04) as specified in vfp help:

18 Field Flags
0x01 System Column (not visible to user)
0x02Column can store null values
0x04Binary column (for CHAR and MEMO only).

If I try to display the contents with the sintax: ? table.field1 I receive the message "Variable 'xxxx' is not found".

Thanks in advance.