Update app.py

app.py

@@ -23,7 +23,10 @@ def avp():
         result = {}
         for key, value in incoming.items():
             if value.isdigit():
-                result[key] = str(int(value) - 1)
+                if int(value) > 0:
+                    result[key] = str(int(value) - 1)
+                else:
+                    result[key] = value
             else:
                 result[key] = value
         response = jsonify(result)