diff --git a/README.md b/README.md
index d8f3755..d1b8eca 100644
--- a/README.md
+++ b/README.md
@@ -39,4 +39,7 @@ $pb->collection(collectionIdOrName)->update(string $recordId, array $bodyParams
 
 // Deletes a single record by its id.
 $pb->collection(collectionIdOrName)->delete(string $recordId, array $queryParams = []);
+
+// Custom Logic
+$pb->collection(collectionIdOrName)->upload('abcdefghijkl','webp', './converted/filepath.png');
 ```
diff --git a/src/Collection.php b/src/Collection.php
index 69db14c..6eefc95 100644
--- a/src/Collection.php
+++ b/src/Collection.php
@@ -55,7 +55,7 @@ class Collection
      */
     public function upload(string $recordId, string $field, string $filepath): void
     {
-        $ch = curl_init($this->url . "/api/collections/gallery_media/records/" . $recordId);
+        $ch = curl_init($this->url . "/api/collections/".$this->collection."/records/" . $recordId);
         curl_setopt_array($ch, array(
             CURLOPT_CUSTOMREQUEST => 'PATCH',
             CURLOPT_POSTFIELDS => array(