def changeActivityOptions(connection, sessionUrl, activityOptionsToChange):
    '''
        This method will change certain properties for the provided activities.

        Args:
        - connection is the connection object that manages the HTTP data transfers between the client and the REST API
        - sessionUrl is the address of the session that should run the test
        - activityOptionsToChange is the Python dict that holds the mapping between agent name and specific properties (activityOptionsToChange format: { activityName : { option : value } })
    '''
    communityListUrl = "%s/ixload/test/activeTest/communityList" % sessionUrl
    communityList = connection.httpGet(url=communityListUrl)

    for community in communityList:
        activityListUrl = "%s/%s/activityList" % (communityListUrl, community.objectID)
        activityList = connection.httpGet(url=activityListUrl)

        for activity in activityList:
            if activity.name in list(activityOptionsToChange):
                activityUrl = "%s/%s" % (activityListUrl, activity.objectID)
                performGenericPatch(connection, activityUrl, activityOptionsToChange[activity.name])