how to include multiple selection parameters on bipublisher url

Hi,

i try to run bip report from url.

The report include a parameter with "Multiple Selection" check.

When i run the url, including somethig like this:

.................bipParams={"_xmode":"2","_xautorun":"true","_paramsPARAM_PERIODO":["201401"],"_paramsPARAM_SIS_FUENTE":["value1","value2"]}

Only default value is selected on report (in my report value2, for example).

Is there any option to pass on url a list of values and bip selected all of them?

Thanks.

Regards,