<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body><div>Hello Mariam,</div><div><br></div><div>a common approach on node capacities is simply to transform the graph.</div><div>You can split the node into two nodes and an arc with cost = 0 and put the capacity on the new arc between the two nodes.</div><div><br></div><div>But I'm interested in the multicommodity cost flow Problem. Do plan to implement a solver for this problem in lemon? </div><div><br></div><div>Greetings,</div><div>Johannes</div></body></html>