Method 'activity_get_activities'

Hi,

i have problems with the call of ‘activity_get_activities’

The filter ‘userid’ doesn’t seem to work for me. I always get back all activities of all users.

This is how i call it:
http://MyDomain.com/api/BuddyPressRead/activity_get_activities/?userid=Administrator

https://ww.wp.xz.cn/plugins/json-api-for-buddypress/