Kapacitor, New tag and value from variable

Hi
I'm strugging to create a new tag in the TICK script which take values from the variale
Here is the sample code, Will highly appreciate any help

// value in variable emptile
var elptime = stream
|from()
.database('telegraf10')
.retentionPolicy('autogen')
.measurement('issue')
|elapsed('value' , 1s)
.as('elapsed')

//Add in tag
stream
|from()
.database('telegraf10')
.retentionPolicy('autogen')
.measurement('issue')
.where(lambda:"value" == 0)
|last('value') .as('value')
|eval(lambda:elptime) .as('elapsed') .tags('elapsed')
|influxDBOut() .database('elap') .measurement('elapnew1')
----------------------------
In other words I'm trying to find the elapsed time when value/status change along with all the other keyvalues.

Rgds
Pankaj

No repository file, test, or entry point is named; start by reproducing the supplied TICK script and checking how eval and tags handle variable-derived values. Done would be a confirmed supported behavior or a clearly scoped change that preserves the elapsed value and other fields in the InfluxDB output.

Written by the indexing model from the issue text.