sourceFigure.setProcessVariableConnection((ProcessVariable) target, link);
}
else if (sourceFigure != null && targetFigure != null)
{
// Node -> Node
Connector start = sourceFigure.connectorAt(0, 0);
Connector end = targetFigure.connectorAt(0, 0);
link.unlink();
return new ParamConnection(link, start, end, this);
}