question

To create a new flowitem type in the bin it's:

Object newFlowItem=Tools.create("FlowItem,"");   // or for a container use "Container" for the 2nd parameter

To create an instance in an object in the model it's:

string itemname="Box";
Object flowitem=Model.find("Tools/FlowItemBin").subnodes[itemname].first;
createcopy(flowitem,<object>);  //replace <object> with a valid pointer to an object.