Automation: issue when filtering with smart values during variable creation

[Thibault DUCHATEAU]

Hi there!
I am having a lot of trouble getting the following filter to work.

Context: I am making an API call that returns a list of messages.

I want to filter only the items on the following fields:
- metadata.event_type=“hardCodedString”
- metadata.event_payload.field=“{{value}}” <= value is (supposed to be) a string

A few notes:
- some items do not have a "metadata" field.
- some items do not have the "event_payload.field" field.

Here is the expression I am currently using:

{{#webResponse.body.messages}} 
  {{#if(equals(metadata.event_type, "hardCodedString"))}}
    {{#if(equals(metadata.event_payload.field, value))}}{{ts}}| {{/}} 
  {{/}} 
{{/}}

Since the field “value” is unique (from a business perspective), I should only get one result or none at all.

However, I regularly end up with inconsistent results: items without metadata, items where the event_type does not match, and items where the field value (within event_payload) does not match.

Does anyone have any idea where the problem might be coming from?

Thanks!