trankim, welcome to ExcelFox. As highlighted by Rick, your query was cross-posted on MrExcel also. We don't mind cross-posting, but you must understand that in these online communities, cross-posting without intimating that it has been cross-posted is a serious offence. Think of it from a developers' perspective. They are volunteers here who spend their time, effort and expertise to help others. Cross-posting is like calling 10 different cab vendors for a pick and drop, and hoping on the first one that arrives. Hope you ensure that if you have to cross-post, it is clearly mentioned along with the link to the other pages.