DTP filter value automation

Hi Experts,

I need to load data to a cube from R/3 for a particular Fiscal year period. In my datasource there comes a field 0FISCPER. Now in DTP filter everytime I give required period and load data.

Now we have to automate the process through process chain. So I need this selection of period in DTP filter to be automatic based on system date. Is there any way to achieve this? May be through routine or something?

Please advise me or give me any document for this.

Thanks,

Akshay