Evaluate DMN via API

[thearlaicheachaig]

Hi, I’m investigating evaluating JSONs using the API.

Setup:

• a simple DMN, that checks if a json field (“name”) contains the value “Test”
• a request to …/decision-definition/key/simpleDMN/evaluate with as body:

{
    "variables": {
        "JSONpayload": {
            "value": "{\"name\": \"thearlaicheachaig \"}",
            "type": "Json"
        }
    }
}

This is working fine - if I open Cockpit I can check the result. However, the API responds with:
Null key for a Map not allowed in JSON (use a converting NullKeySerializer?) (through reference chain: java.util.ArrayList[0]->java.util.HashMap[“null”])

I would to retrieve the DMN evaluation result with the API as well. Is this possible?

[thearlaicheachaig]

For future reference if someone else finds this. You have to configure the output in the DMN as well.