Refresh data in SWF based on excel file saved from SAP BW workbook

Hi, is there a way to get data refresh in SWF dashboard from excel file as a data source. SAP BW workbook report will be saved as an excel file daily and placed in somewhere. I would like to create a dashboard which can connect to the excel data source and refresh on load.

Appreciate your advice and help. Thank you.

I am using Xcelsius 2008 and SAP BI 7.0