hallroger

I keep getting an error on the most basic script what is wrong? _ExcelBookOpen(c:\users\roger\mydocuments\kroger.xlsx,1) Here are the errors C:\Users\Roger\Desktop\test.au3(1,17) : ERROR: syntax error (illegal character) _ExcelBookOpen(c: ~~~~~~~~~~~~~~~~^ C:\Users\Roger\Desktop\test.au3(1,56) : ERROR: _ExcelBookOpen(): undefined function. _ExcelBookOpen(c:\users\roger\mydocuments\kroger.xlsx,1)