diff --git a/exec/heatmap_example.R b/exec/heatmap_example.R
index 771c75e..9f32763 100644
--- a/exec/heatmap_example.R
+++ b/exec/heatmap_example.R
@@ -7,6 +7,7 @@ source("../R/columnSelector.R")
 source("../R/transformation.R")
 source("../R/heatmap.R")
 source("../R/label.R")
+source("../R/limit.R")
 
 ####Test Data
 data <- data.table::as.data.table(mtcars, keep.rowname = "id")