diff -u -r1.3 -r1.4
--- AxialBarrelTrackFinder1.java	9 Jul 2007 22:19:37 -0000	1.3
+++ AxialBarrelTrackFinder1.java	9 Jul 2007 22:36:29 -0000	1.4
@@ -113,8 +113,8 @@

         Set<String> detnames = detector.getSubdetectorNames();
         
         // Get z component of magnetic field

-        Hep3Vector ip = new BasicHep3Vector(0.,0.,0.);
-        double b_field = ((DeDetector)(detector.getDetectorElement())).getBField(ip).z();

+        double[] ip = {0.,0.,0.};
+        double b_field = detector.getFieldMap().getField(ip)[2];

         
         // Get the barrel tracker attributes
         MultiLayerTracker barrel = (MultiLayerTracker)detector.getSubdetector("TrackerBarrel");