diff --git a/tracy/tracy/inc/tracy_global.h b/tracy/tracy/inc/tracy_global.h
index d0c8958671cc652e92e8461a1d2b28932c8e5789..cfc6d5157dad79fe1d9f76bf189ee6fe4157f7a9 100644
--- a/tracy/tracy/inc/tracy_global.h
+++ b/tracy/tracy/inc/tracy_global.h
@@ -1,4 +1,5 @@
 #define PLANES 2
+#define BPM_MAX 120
 
 typedef struct globvalrec {
   double        dPcommon,       // dp for numerical differentiation 
@@ -55,10 +56,12 @@ typedef struct globvalrec {
 				   emittances */
   int           RingType;       // 1 if a ring (0 if transfer line)
   
-  Vector        bpm_list;
-  Vector        hcorr_list;
-  Vector        vcorr_list;
-  Vector        qt_list;
+ long bpm_list[BPM_MAX];        /* list of position for bpms into the lattice */
+ long hcorr_list[BPM_MAX];      /* list of position for horizontal correctors */
+ long vcorr_list[BPM_MAX];      /* list of position for vertical correctors  */
+ long qt_list[BPM_MAX];        /* list of position for vertical correctors into the lattice */
+
+
 } globvalrec;