Oracle Forms

hi

i had exported two tables using parameter file method as
file=c:\export.dmp
userid=riks/rick
rows=y
compress=y
grants=y
tables=cashes,glday
querry="where day_dt>=to_date('01-dec-2001','dd-mon-yyyy')"

and invoked as

ezp parfile=c:\export.txt

and this work well

now i need to do this same thing using developer 6i

by using the command host and passing a date as parameter to export the table.
i can able to execute exp using host command as bellow
host ('exp riks/riks file='c:\export.dmp',no_screen');
but i cannot able to use the key word querry with above method.

plese help me