Flow to control duplicate records

[Alilo_Dris]

Hi everyone
I created a flow to control duplicate records, and I implemented the following configuration:

1. Read Data Operation:

{
    "filter": {
        "_and": [
            { "Ense": { "_eq": "{{ $trigger.payload.Ense }}" } },
            { "activite": { "_eq": "{{ $trigger.payload.activite }}" } },
            { "date_cours": { "_eq": "{{ $trigger.payload.date_cours }}" } }
        ]
    }
}

2. Add Script Operation:(check_dup)

module.exports = async function(data) {
    return (data.read_data.length > 0);
}

This script returns true if a duplicate exists.

3. Condition Operation:

{
    "check_dup": {
        "_eq": true
    }
}

---

The issue:

Even when there is no duplicate, Directus still returns this error:

The following fields contain invalid values:
check_dup: The value must be true

It seems that Directus is requiring the value true even when the condition should evaluate to false (i.e., no duplicates found).

---

Question:

How can I properly set up the flow so that Directus only triggers the error when a duplicate exists, and allows the record to be created when there is no duplicate?
thank in advance

[Alilo_Dris]

YES it’s the name of node add script operation

[Alilo_Dris]

@Alilo_Dris

{
    "check_dup": {
        "_eq": true
    }
}

I think you reply but following your idea, I tried it, but I need the correct syntax in the “check_dup” operation and the condition node. Here is my example flow:
node “check_dup”:

node “condition”:

can you send me an exalpme using flow
thanks