Hide the datatip for some been worth or series

Hello!
I have a histogram with 2 stacked series. I want to use datatips for the series at the front, but not for those at the back. How can I achieve this? If I return an empty string for the series in the background, I can still see a little square datatip and the marker for the datapoint. I could live with the marker, but not with the empty square datatip that appears. Can someone help me?

THX

This action solves the problem, if anyone has a similar request.

Tags: Flex

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