changing data provider dynamically in a web report

I have a static webpage on which user selects a link and according to the link he selects, I go ahead and open a new window wherein the table displays data from 2 views.

V_DMXS_M02_Q0001_1_GS_BRAND

V_DMXS_M02_Q0001_1_GS_PACK

to do this i pass the RESET_DATA_PROVIDER command through URL

http://hr3bwp00.xxx.com:8080/sap/bw/BEx?sap-language=EN&bsplanguage=EN&CMD=LDOC&TEMPLATE_ID=ZMXS_TEST_W0009_TEXT_FIX_V3&CMD=RESET_DATA_PROVIDER&DATA_PROVIDER=DATAPROVIDER_1&DATA_PROVIDER_ID=V_DMXS_M02_Q0001_1_GS_BRAND

the web template has radio groups, navigation blocks etc in header.

when i run the report it gives me error

Error loading item S_BRAND_FILTER.

What's wrong with this passing through URL.