How to get PII Entities for non-text field in Azure search

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I've created a Azure search Blob Index whose model looks somewhat like the below JSON on search

"value": [
        {
            "@search.score": 1,
            "metadata_storage_content_type": "application/octet-stream",
            "masked_text": null,
            "language": "en",
            "content": {
                "botName": "*****",
                "date": "*****",
                "channel": "******",
                "userid": "******",
                "conversationid": "*******",
                "isConversationIncomplete": false,
                "location": "",
                "locale": "",
                "messages": [ {
                        "date": "*****",
                        "isfromuser": "true",
                        "message": "Hi",
                        "sentiment": "positive",
                        "intent": "***** Intent",
                        "isConversationIncomplete": "false",
                        "id": "***"
                    },
                    {
                        "date": "****",
                        "isfromuser": "true",
                        "message": "My number is 999******",
                        "sentiment": "positive",
                        "intent": "***** Intent",
                        "isConversationIncomplete": "false",
                        "id": "****"
                    }]
            },
            "pii_entities": []
        }

I also want to create a PII detection skill for each message in the messages array, you can see the skill config in the image below

enter image description here

the problem is that I'm not able to change the Input value to any property from the result entity, it allows only the values as "languageCode" or "text" how can I create the PII skill for a input of my choice?

azure-cognitive-services azure-cognitive-search azure
1 Answers

PII Detection cognitive skill uses the detection models provided in Azure Cognitive Services for Language which only accept text as type. If you would like to check any other properties that have a different type, you could use a custom skill and convert your property type to text and then send this as PII Detection skill input.

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