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Currently, it has been confirmed that the Expression.Evaluate function is not available in Dataflow Gen2.
This function is extremely useful for evaluating dynamic expressions, enabling more flexible data transformations and user-defined logic.
To enhance the capabilities of Power Query in Dataflow Gen2, I strongly request that more functions—especially Expression.Evaluate—be made available.
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This specific function is disabled from a security standpoint.
Would you mind sharing a bit more about the scenarios where you use such function? There might be other options or other ways in which you could tackle such scenarios today