diff --git a/examples/costanza.lua b/examples/costanza.lua
index dc4f7f8..c6cba1c 100644
--- a/examples/costanza.lua
+++ b/examples/costanza.lua
@@ -1,5 +1,5 @@
 -- @example Basic example for testing goodness-of-fit.
--- This example reproduces Figure 4 of from Costanza R. 
+-- This example reproduces Figure 4 of from Costanza R.
 -- Model goodness of fit: a multiple resolution procedure. Ecological modelling. 1989 Sep 15;47(3-4):199-215.
 import("calibration")
 
@@ -13,7 +13,7 @@ scene2 = CellularSpace{
 	attrname = "value"
 }
 
-result = multiLevel{
+result, data = multiLevel{
 	target = {scene1, scene2},
 	select = "value",
 	discrete = true
diff --git a/examples/costanza.tme b/examples/costanza.tme
new file mode 100644
index 0000000..8eb3a9d
--- /dev/null
+++ b/examples/costanza.tme
@@ -0,0 +1,8 @@
+return {
+	[1] = {
+		x = 100, 
+		y = 100, 
+		width = 600, 
+		height = 500, 
+	}, 
+}
diff --git a/lua/GoodnessOfFit.lua b/lua/GoodnessOfFit.lua
index 76c1b68..23c3f8e 100644
--- a/lua/GoodnessOfFit.lua
+++ b/lua/GoodnessOfFit.lua
@@ -240,12 +240,12 @@ end
 -- @usage import("calibration")
 --
 -- cs1 = CellularSpace{
---     file = filePath("Costanza.pgm", "calibration"),
+--     file = filePath("costanza.pgm", "calibration"),
 --     attrname = "costanza"
 -- }
 --
 -- cs2 = CellularSpace{
---     file = filePath("Costanza2.pgm", "calibration"),
+--     file = filePath("costanza2.pgm", "calibration"),
 --     attrname = "costanza"
 -- }
 --