Better Error Message for Excel Function

[Phil Pendlebury]

Example:

Use the default: XLOpen>%USERDOCUMENTS_DIR%\mybook.xls,1,xlBook
XLGetSheetDims>xlBook,Customers,rows,cols

But name the Sheet (within the workbook) "Customer" instead of "Customers"

Here I get access violation and / or an error saying INVALID INDEX. Would it be possible to be more informative:

"No Sheet - Customer- can be found within workbook mybook.xls"

[Marcus Tettmar]

Yes, definitely. Tx.