Thanks for the reply. Unfortunately the child element parameter of the select tool does not accept the general description of polyline as an input. Once again the Select tool asks for each polyline feature to be nominated individaully i.e 12345.dxf / polyline.
If I have a folder containing over 1500 dxf files, each individually identified, and each one conatins 5 features (Annotation, Point, Polyline, Polygon and Multipatch), the problem I have is building a model that will extract each polyline feature from the individual dxf files without having to nominate the dxf by title.
Still hoping someone can help.