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Clear Chart in Case-Switch?

I think I'll need your help again.
In my vi I use two waveformcharts, the history-property only works if its in the same case, but I want to clear my charts when the other case is called.
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Please explain what you are trying to do again. I have no difficulty in putting the clear history property in a different case and having it work.

Lynn
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Hi,
I recieve numeric data from serial port starting with a "Start..." and ending with an "Stop....". Between this there are strings like +123,45-87654. I convert this into two numbers and display them on two waveform-charts. After recieving "Stop...." measurement stops, and if there comes a "Start...", I want charts to be cleared. In one Case, the conversion and the displaying is done, and in the other case (if an "Start..." is recieved) I want the charts to be reset. If I create an Property-Node on charts, it works, but if I move these Nodes within their constants to the other case, I got a broken arrow.
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Sorry, but I even solved my problem.
I moved the property-nodes out of the case structure (if measurement stops, vi works on outside in an while-loop).
Thanks for your help!
So Long...

Nico
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