diff --git a/webapp/controller/HeroController.class.php b/webapp/controller/HeroController.class.php
index 8b734b39..83491d05 100644
--- a/webapp/controller/HeroController.class.php
+++ b/webapp/controller/HeroController.class.php
@@ -363,7 +363,7 @@ class HeroController extends BaseAuthedController {
             $costItems = array(
                 array(
                     'item_id' => $costItemId,
-                    'item_num' => $currLevelMeta['gold']
+                    'item_num' => $nextLevelMeta['gold']
                 )
             );
         }
@@ -373,7 +373,7 @@ class HeroController extends BaseAuthedController {
             $costItems = array(
                 array(
                     'item_id' => $costItemId,
-                    'item_num' => $currLevelMeta['diamond']
+                    'item_num' => $nextLevelMeta['diamond']
                 )
             );
         }
@@ -500,7 +500,7 @@ class HeroController extends BaseAuthedController {
             $costItems = array(
                 array(
                     'item_id' => $costItemId,
-                    'item_num' => $currQualityMeta['gold']
+                    'item_num' => $nextQualityMeta['gold']
                 )
             );
         }
@@ -510,7 +510,7 @@ class HeroController extends BaseAuthedController {
             $costItems = array(
                 array(
                     'item_id' => $costItemId,
-                    'item_num' => $currQualityMeta['diamond']
+                    'item_num' => $nextQualityMeta['diamond']
                 )
             );
         }