Reference different workbooks and sum the individual values

[emymeeky]

I have a table in a worksheet (named "stock list") with 5 columns in a workbook I will call Workbook1 and in other workbooks with identical tables. The last column in workbook1 named "Total" is gotten by summing the "Totals" from the external workbooks.

These external data sources are saved as CSV in the document folder.
In another sheet (called Datasources) of workbook1 I have a dynamic list of the external workbook names arranged in column A.

What I need is a formula that will reference the external workbooks specified in column A (Of Datasources). In other words, I need a SUMIF function which will
1. check the first column of sheet "stock list",
2. then check "Datasources" for the list of names of the external workbook sources
3. Apply sumif function on each of the workbooks and sum their individual result and return the value to the last column of workbook1.


Thanks

See attached file

 

[emymeeky]

Sorry I don't know where to upload a file