Using date filter within split filter

Hi All
I'm receiving batch event from azure eventhub and I am using split filter to split each event into it's own record
the problem I'm facing is that each split event has it's own datetime and I would like to use the as @timestamp

here is my filter so far but the records.time is still different from the @timestamp

filter {

      json {

        source => "message"


      split {

        field => "records"


      date {

        match => ["records.time", "yyyy-MM-dd'T'HH:mm:ss'.'SSSZ"]

        target => "@timestamp"



That should almost certainly be "[records][time]"

not really I got
_dateparsefailure tag when I did that

That is a good sign. It means the field you are trying to match exists, it just doesn't have the right format.

What does [records][time] look like if you use

output { stdout { codec => rubydebug } }

Thanks you for your help
now it works after I fixed time format
date {

    match => ["[records][time]", "ISO8601"]

    target => "@timestamp"


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