diff --git a/README.md b/README.md
index d1b8eca..00e0c7d 100644
--- a/README.md
+++ b/README.md
@@ -41,5 +41,5 @@ $pb->collection(collectionIdOrName)->update(string $recordId, array $bodyParams
 $pb->collection(collectionIdOrName)->delete(string $recordId, array $queryParams = []);
 
 // Custom Logic
-$pb->collection(collectionIdOrName)->upload('abcdefghijkl','webp', './converted/filepath.png');
+$pb->collection(collectionIdOrName)->upload(string $recordId, string $field, string $filepath);
 ```