Using fliters with HPL

Greetings Friends, I'm unloading a rather large table using HPL via. command line and was wondering about the syntax to use a filter so I only unload, or reload, the data I want based on a given criteria. The table in question has a column named 'creationDate' which I would like to filter on (all the data from the past x months....) My create job syntax is as follows: onpladm create job acc_sales_revenue_unload -D archive_db -t acc_sales_revenue -d acc_sales_revenue.file -f u My syntax to start the job is as follows: onpload -j acc_sales_revenue_unload -fu Thanks in advance for your help. Tam.