diff --git a/python/extract.py b/python/extract.py
index a1bc40e..526749a 100644
--- a/python/extract.py
+++ b/python/extract.py
@@ -60,9 +60,10 @@ def create(name,objects):
     run("aggregate.assign_object", model, relating_object=building, product=storey)
 
     if True:
-        l = random.random() * 5
-        h = random.random() * 3
-        t = random.random() * 0.2
+        f = 5
+        l = random.random() * 5 * f
+        h = random.random() * 3 * f
+        t = random.random() * 0.2 * f
         wall = run("root.create_entity", model, ifc_class="IfcWall")
         run("geometry.edit_object_placement", model, product=wall)
         representation = run("geometry.add_wall_representation", model, context=body, length=l, height=h, thickness=t)