[sqlbox] MT is allways sent as flash message.

[Fourat Zouari]

I'm using sqlbox and it's sending MT and receiving MO, only one problem is
that the MTs are sent as flash message.
tryed to set the mclass field to 0,1,2 and 3, the message is allways a flash
one.
The message is stored in "sql-log-table" with those mclass values, so
nothing goes wrong, except it's a flash message.