diff --git a/whatsapp/__init__.py b/whatsapp/__init__.py
index d60d27b..c83e9f3 100644
--- a/whatsapp/__init__.py
+++ b/whatsapp/__init__.py
@@ -331,8 +331,8 @@ def mark_as_read(self) -> dict:
             logging.error(response.json())
             return response.json()
 
-    def send(self,sender, preview_url: bool = True) -> dict:
-        print(sender)
+    def send(self,sender = None, preview_url: bool = True) -> dict:
+        
         try:
             sender = dict(self.instance.l)[sender]
             print(self.instance.l)
@@ -344,6 +344,9 @@ def send(self,sender, preview_url: bool = True) -> dict:
         except:
             print(22)
             sender = self.instance.phone_number_id
+            
+        if sender == None:
+            sender = self.instance.phone_number_id
 
         url = f"https://graph.facebook.com/v18.0/{sender}/messages"
         data = {