trying to launch a macro when the value of a DDE range changes

I'm a novice in VBA but still I need yo execute a macro every time the value of a range changes. The marco is already written but if someone can help me with this issue, I will be very 开发者_Go百科grateful. Just as you know the changing range is a DDE link updating the range with a continuous flow

Thxs for your help

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I think you are referring to Excel, so this may help: automatically execute an Excel macro on a cell change