From 11c3ba9496eca42836d09e9252d5e065abeda94a Mon Sep 17 00:00:00 2001
From: benjaminknebusch <benjamin.knebusch@gmail.com>
Date: Fri, 5 Apr 2019 14:02:59 +0200
Subject: [PATCH] Update ft11_magnetostatics.py

Expression needs Cpp code to be provided use UserExpression instead
---
 pub/python/vol1/ft11_magnetostatics.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pub/python/vol1/ft11_magnetostatics.py b/pub/python/vol1/ft11_magnetostatics.py
index ad155da5..59498170 100644
--- a/pub/python/vol1/ft11_magnetostatics.py
+++ b/pub/python/vol1/ft11_magnetostatics.py
@@ -60,7 +60,7 @@
 J_S = Constant(-1.0)
 
 # Define magnetic permeability
-class Permeability(Expression):
+class Permeability(UserExpression):
     def __init__(self, markers, **kwargs):
         self.markers = markers
     def eval_cell(self, values, x, cell):