diff --git a/app/Livewire/PanelCheckList.php b/app/Livewire/PanelCheckList.php
index c8be0d1..a793906 100644
--- a/app/Livewire/PanelCheckList.php
+++ b/app/Livewire/PanelCheckList.php
@@ -197,7 +197,7 @@ public $records = [];
 
             $characteristic = ProductCharacteristicsMaster::find($characteristicId);
 
-            if (! $characteristic || ! is_numeric($value)){
+            if (! $characteristic || ! is_numeric($value) || ($value < $characteristic->lower || $value > $characteristic->upper)) {
                 return false;
             }
         }