Hello, I am struggling with R and have little experience. I need help or suggestions to create a multi-objective program. I have a table as follows http://www.nabble.com/file/p25615459/smallmodel01.xls smallmodel01.xls My constraints are subject to each origin, their corresponding numbers and the specific number for that origin constraint. This creates my single objective model just fine. However, I need to hold these constraints true, in addition to subjecting the destinations to a specific constraint as well. The destination constraint is to ensure that all transportation to each destination is filled. As in, I need to make this decision binary saying that all transportation to that specific destination is being used or not used. Thank you, Becky -- View this message in context: http://www.nabble.com/help-with-multi-objective-program-using-lpSolve-API-tp25615459p25615459.html Sent from the R help mailing list archive at Nabble.com.