diff --git a/include/base.h b/include/base.h
index 6553fad..951a8b7 100644
--- a/include/base.h
+++ b/include/base.h
@@ -34,6 +34,9 @@ struct {
     int x;
     int y;
     int z;
+    int xmax;
+    int ymax;
+    int zmax;
 } typedef Arrow_t;
 
 struct {
diff --git a/src/scheduler.c b/src/scheduler.c
index 6d793ff..2587130 100644
--- a/src/scheduler.c
+++ b/src/scheduler.c
@@ -54,20 +54,20 @@ static Center_t *findWorkArea(Center_t *centersList, Arrow_t *electedArrow,
 
     while (currentCenter){
         //printLog("Center : %d\n", currentCenter->x);
-        if (    abs(electedArrow->x - currentCenter->x) >= ruleRadius
-            &&  abs(electedArrow->y - currentCenter->y) >= ruleRadius
-            &&  abs(electedArrow->z - currentCenter->z) >= ruleRadius
+        if (    abs(electedArrow->x - currentCenter->x) <= ruleRadius
+            ||  abs(electedArrow->y - currentCenter->y) <= ruleRadius
+            ||  abs(electedArrow->z - currentCenter->z) <= ruleRadius
             ){
-            newCenter->x = electedArrow->x;
-            newCenter->y = electedArrow->y;
-            newCenter->z = electedArrow->z;
-            return newCenter;
+            free(newCenter);
+            return NULL;
         }
         currentCenter = currentCenter->next;
     }
 
-    free(newCenter);
-    return NULL;
+    newCenter->x = electedArrow->x;
+    newCenter->y = electedArrow->y;
+    newCenter->z = electedArrow->z;
+    return newCenter;
 }
 
 /* -------------------------------------------------------------------------- */