Query Error in Pentaho report designer while using HIVE database

Hi All,

I need to pull out the data from HIVE database on daily basis which has been partitioned by years,months and days.
actually days will in the below format 20130904 for 4th september 2013.
how can i add the parameter / mention it in my query to etract the todays/Previous days data using the parameter.

Please help.
Thanks in advance.

Malibu