diff --git a/src/main/java/emu/nebula/data/resources/CharGemSlotControlDef.java b/src/main/java/emu/nebula/data/resources/CharGemSlotControlDef.java
index 72fbad9..563fbb8 100644
--- a/src/main/java/emu/nebula/data/resources/CharGemSlotControlDef.java
+++ b/src/main/java/emu/nebula/data/resources/CharGemSlotControlDef.java
@@ -49,7 +49,7 @@ public class CharGemSlotControlDef extends BaseDef {
                 list.add(attributeType.getRandomValue());
             }
             
-            if (list.size() >= this.MaxAlterNum) {
+            if (list.getValueCount() >= this.MaxAlterNum) {
                 return list;
             }
         }