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')