Why vlookup is not able to apply for more than 1000 count from one workbook to another workbook?

Hi,

Why vlookup is not able to apply for more than 1000 count from one workbook to another workbook?

Please help…

It should be. What is your LibreOffice version and what is your operating system name/version?

LibreOffice Version 4.1 and operating system which we use is Win 7, please suggest…