I have a dilemma. I need to use threads, and I also need to use Excel Constants. If I put this at the start, perl dies because it is not thread safe. 
use threads;
use Win32::OLE;
use Win32::OLE::Const 'Microsoft Excel';

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Up to this point, I was using require Win32::OLE in the sub and all worked fine.
Now, I have to make my excel file backward compatible, so I need to save it as a xlExcel8 file format. If you try to use require Win32::OLE::Const 'Microsoft Excel', you get an error. I have tried eval'ing this statement, but i get a bareword error for the xlExcel8 statement. Does anyone know of a workaround for this problem?
UPDATE:
I replaced the xlExcel8 with '56' after dumping the Microsoft Excel Constants, and it works great. Thanks everyone.

In reply to Threads and Excel Constants by ~~David~~

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