diff --git a/src/class.NumberBaseCryptCollection.php b/src/class.NumberBaseCryptCollection.php
index c45bf19..2431496 100644
--- a/src/class.NumberBaseCryptCollection.php
+++ b/src/class.NumberBaseCryptCollection.php
@@ -116,15 +116,15 @@ class NumberBaseCryptCollection extends NumberBaseCrypt {
     public function decryptComplex(string $data, array $digitList) : array {
         $cd = [];
         for($i=0;$i<count($digitList);$i++) {
-            $numberBaseCrypt = new NumberBaseCrypt($digitList[$i]);
+            $this->setDigits($digitList[$i]);
 
             $len = substr($data, 0, 1);
-            $len = $numberBaseCrypt->baseToBase10($len);
+            $len = $this->baseToBase10($len);
             $data = substr($data, 1);
 
              if($len <= strlen($data)) {
                 $tmp = substr($data, 0, $len);
-                $cd[] = $numberBaseCrypt->baseToBase10($tmp);
+                $cd[] = $this->baseToBase10($tmp);
                 $data = substr($data, $len);
              }
         }