tickscript errors on parser:unexpected

[harikrishna1083]

The generatd tickscript is erroring out when trying to save the alert rule, though TICK syntax is valid.

The error is like:
parser: unexpected ) line 7 char 67 AND ("ho".expected:"number","string","duration","identifier","TRUE","FALSE"(","-"",!

The generated tick script is like:

var critIO = 70

var highIO = 50

var crit = critIO + 1

var critReset = highIO + 4

var db = 'telegraf'

var rp = 'autogen'

var measurement = 'cpu'

var groupBy = ['host']

var whereFilter = lambda: (isPresent("cpu") AND "cpu" == 'cpu-total') AND ("host" == hostDevice)

var period = 30s

var every = 30s

var idVar = name

var message = 'High IOWait detected on {{ index .Tags "host" }}. Current value: {{ index .Fields "usage_iowait" }}'

var idTag = 'alertID'

var levelTag = 'level'

var messageField = 'message'

var durationField = 'duration'

var outputDB = 'chronograf'

var outputRP = 'autogen'

var outputMeasurement = 'alerts'

var triggerType = 'threshold'

var data = stream |from() .database(db) .retentionPolicy(rp) .measurement(measurement) .groupBy(groupBy) .where(whereFilter) |window() .period(period) .every(every) .align() |max('usage_iowait') .as('value')

var trigger = data |alert() .crit(lambda: "value" > crit) .critReset(lambda: "value" < critReset) .stateChangesOnly() .message(message) .id(idVar) .idTag(idTag) .levelTag(levelTag) .messageField(messageField) .durationField(durationField) .slack()

trigger |eval(lambda: float("value")) .as('value') .keep() |influxDBOut() .create() .database(outputDB) .retentionPolicy(outputRP) .measurement(outputMeasurement) .tag('alertName', name) .tag('triggerType', triggerType)

trigger |httpOut('output')