diff --git a/simpinkscr/simple_inkscape_scripting.py b/simpinkscr/simple_inkscape_scripting.py
index f1b68ef..2791d46 100644
--- a/simpinkscr/simple_inkscape_scripting.py
+++ b/simpinkscr/simple_inkscape_scripting.py
@@ -3634,12 +3634,14 @@ def to_list(e):
 class SimpleInkscapeScripting(inkex.EffectExtension):
     'Help the user create Inkscape objects with a simple API.'
 
-    def __init__(self):
+    def __init__(self, obj=None):
         super().__init__()
         self.options.user_args = []
         self.options.encoding = ''
         self.options.py_source = None
         self.options.program = None
+        if obj is not None:
+            self.svg = obj.svg
 
     def filename_arg(self, name):
         """Existing file to read or option used in script arguments"""