Kapacitor passing log object in json vars file

Hi, I’m following this guide (https://docs.influxdata.com/kapacitor/v1.5/working/template_tasks/#define-a-new-task) and instead of trying to send emails out I want to just calculate the mean for the past 5 min and log the output on a 1 min interval. I’m not sure how to pass the log() parameters in the JSON vars file.

This is my template:
# cat log_batch_template.tick
// Which measurement to consume
var measurement string
// Which database/rp/measurement to use
var db string
// Optional where filter
var where_filter = lambda: TRUE
// Optional list of group by dimensions
var groups =
// Which field to process
var field string
// How much data to window
var window = 5m
// What interval to show data
var interval = 1m

batch
    |query('''
    SELECT mean(measurement) AS inMeanOctets
    FROM db
    WHERE where_filter
    ''')
        .period(window)
        .every(interval)
    |mean(field)
    |log()

This is my vars.json file:

{
    "measurement": {"type" : "string", "value" : "interfaces" },
    "where_filter": {"type": "lambda", "value": "\"device\" == 'HUBC01'"},
    "groups": {"type": "list", "value": [{"type":"string", "value":"device"}]},
    "field": {"type" : "string", "value" : "inOctets" },
    "warn": {"type" : "lambda", "value" : "\"mean\" < 30.0" },
    "crit": {"type" : "lambda", "value" : "\"mean\" < 10.0" },
    "window": {"type" : "duration", "value" : "5m" },
    "log": {?????}
}

What do I put in the “log” object from the JSON file that will log the 5 minute mean of inOctets every min?

Thank you.