Hello, i am creating a quickbooks etl and have an issue with inline mappings: the data for most of columns from quickbooks is basically a string in json structure, like column Column contents is: "{"value": "2023-06-01"}" .I am trying to do an inline mapping, however the trick like Column.value does not work. I can do the Column[10,20] for fixed columns, however this does not work with extracting strings with variable length. Any advice?

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