diff --git a/examples/vtk/actor_picker2.py b/examples/vtk/actor_picker2.py
index 8c46064..87c596e 100755
--- a/examples/vtk/actor_picker2.py
+++ b/examples/vtk/actor_picker2.py
@@ -182,7 +182,7 @@ def __init__(self, server=None):
     const prop = getVtkObject(propId);
 
     interactor.observe("MouseMoveEvent", async () => {
-          const pos = interactor.eventPosition;
+          const pos = await interactor.getEventPosition();
           await pick([pos[0], pos[1], 0], picker, renderWindow, renderer, prop);
     });
 }""")