in reply to Error in excel reader

$Excel->WorksheetFunction->Find("IB_MsgSig","E","Go Notifier Customization Availability Flag 2");

You are accessing WorksheetFunction.Find, which does the same as the Excel function FIND. I suspect you might want Range.Find instead.

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Re^2: Error in excel reader
by Veltro (Hermit) on Jan 02, 2019 at 14:51 UTC
      I'm not so sure, I am definitively finding a method with that prototype

      See e.g. What does Application.WorksheetFunction.Find do?, in other words, it's basically the same as index. Although it is just a guess, based on the arguments the OP is passing to the function, I really do suspect the OP mistook WorksheetFunction.Find for Range.Find, and wants the latter instead.