It looks like your $Book object is undefined.

Try adding error-checking: 

$Win32::OLE::Warn = 3; # Die on Errors.

my $excelfile = 'C:/perlpractice/FU_HMI_List.xlsm';

my $Excel = Win32::OLE->GetActiveObject('Excel.Application')
           or  Win32::OLE->new('Excel.Application', 'Quit')
           or  die Win32::OLE->LastError(); 

my $Book = $Excel->Workbooks->Open($excelfile) or die Win32::OLE->Last
+Error();
my $Sheet = $Book->Worksheets(3) or die Win32::OLE->LastError();

[download]
"use strict;" would help too, in the long run.

        ...it is unhealthy to remain near things that are in the process of blowing up.     man page for WARP, by Larry Wall

In reply to Re: Reading Excel by NetWallah
in thread Reading Excel by ravi179

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