diff --git a/business/src/main/java/com/fizz/business/service/strip/SegmentTrackerService.java b/business/src/main/java/com/fizz/business/service/strip/SegmentTrackerService.java
index cc6f3ac..123d274 100644
--- a/business/src/main/java/com/fizz/business/service/strip/SegmentTrackerService.java
+++ b/business/src/main/java/com/fizz/business/service/strip/SegmentTrackerService.java
@@ -387,7 +387,7 @@ public class SegmentTrackerService {
 
             if (headPos.compareTo(BigDecimal.valueOf(dynPos)) >= 0 && !prevReached.contains(d)) {
 
-                MatmapDTO matmap = MatmapUtil.getMatmap(entry.getPayOffReelNumber());
+                MatmapDTO matmap = MatmapUtil.getMatmap(entry.getPayOffReelNumber()-1);
                 MatmapUtil.setMatId(d.getIdx(), coilId,matmap.getPlanId());
 
                 if (d == DeviceEnum.WELDER) {