Version Ref: 6.1 (USP 6.0.02)
Syntax:
handle = XL_ADDSHEET([name])
Add a new sheet to the XLSX document.
Parameters -
name : The name for the sheet to be created. Defaults to auto naming the
sheet based on the Sheet1, Sheet2, ..., SheetN template.
Returns a handle to a new sheet object on successs and "-1" on error.
XL_ERROR() can be called to return the last error.