EasyChart Start/End date

I am using memory tags to set EasyChart displayed data range.
DateTime type tags, batch start and end time.

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Everything works OK when I use gateway tags.
However I would like to use client tags to allow multiple users to analyze different batches at the same time. But when I connect EasyChart range to [client] tags, chart time range does not update, it displays last 10 minutes.
Both client and gateway tags have the same values.
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Try not using bindings. Simply have whatever scripting you are using for your batch selection write the correct datetime values directly to those properties.