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Jolt Specification as an Expression

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Hi, I want to load complete specification file from the database, for that, i create processors to load from db and put it in the properties but while specifying property as a specification, i got an error. I also tried different ways but no luck.

I stored the specification in "SPECS" properties but while specifying it through "${SPECS}" , its not working. I also tried through Advance option and property creation.

I think, currently, replacing the content through property is not fully supported in current expression language of Jolt processor?

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