Hello mnakkach,
Welcome to the Monastery. This question actually has been asked again and contains sample(s) of code that will do exactly what you want.
Take a look here, writing after parsing and also here Spreadsheet::WriteExcel; combining xls into one.
If you still have some problems with the code, give us sample of input, output and code that is compiling and we will try to assist you more.
Hope this helps, BR.
In reply to Re: Merging 2 xlsx files
by thanos1983
in thread Merging 2 xlsx files
by mnakkach
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