Query Manipulation Server 26.2
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# insertJson

The `insertJson` method inserts metadata from a JSON string, LuaJsonObject, or LuaJsonArray, into the field.

## Syntax

    insertJson ( json [, fieldName] )

## Arguments

Argument | Description
--- | ---
`json` | (string or LuaJsonArray or LuaJsonObject) The JSON to insert into the field.
`fieldName` | (string) The name of a sub-field to add the JSON to. If you set this argument, a sub-field is created. If you do not set this argument, the JSON is added to the field that the method was called on.

## See Also

- LuaDocument:insertJson

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Version 26.2 | Last updated April 2026

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Product: Knowledge Discovery Query Manipulation Server 26.2

Topic Title: insertJson