Virtual table "local" does not function Read/Write

I try use local virtual table, but I can't write changes to original table:

open database southwind
create virtualtable vtcustomers alias "vtcustomers" connstr "local" as select * from customers
use vtcustomers
brow && write some changes
use
use vtcustomers
brow && changes not present

Please where is error?

Duplicate post - this thread is continued here.

For information on troubleshooting Virtual Tables, please also see here.