Hi Dev, I am new at Openoffice. Sorry to bother you with small questions but How do I turn the sheet tabs of my workbook back on? And what's wrong with this formula to sum any value in D column corresponding with the code 2320 on B column through the 12 sheets: =sumif((sheet1.b1:sheet12.b100);2320;(sheet1.c1:sheet12.c100)). Please answer if you have time or pass on to someone who can help me. Thank you so much.
Best regards, Trung
