Thanks Brian for your help It is right ,I cannot load Blotter ,because I cannot load xts (0.7-6.4);it seems there is no file available for windows on R forge right now . regards burcy -- View this message in context: http://r.789695.n4.nabble.com/blotter-package-tp3031027p3031671.html Sent from the Rmetrics mailing list archive at Nabble.com.