Mike pretended :
The algebraic modeler is MPL of Maximal Software. When I had the table
in Excel, you can go around the problem by adding a LHS ' to every
element whether it is number or text. Now, when I saved the Excel file
as a csv it no longer accepts an index that has some elements as
numbers while others are text (like CW)?!

Mike,
So what you're saying is that 'Excel' removes the apostrophes when
saving as CSV so that when reopening the file later the data no longer
has apostophes on the LHS?

Perhaps you need a custom import procedure that ensures the apostrophes
are placed if missing? If so.., read the entire CSV into an array and
place apostrophes where needed. If MPL reads from Excel then dump the
array into a worksheet.

-OR-
If MPL reads in from the CSV directly then dump the array back into the
CSV.

--
Garry

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