Excell Open File

[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)

[searchresult]

_ExcelBookOpen("c:usersrogermydocumentskroger.xlsx",1)