diff --git a/preparations.sh b/preparations.sh
index 3af0b5d..7381575 100755
--- a/preparations.sh
+++ b/preparations.sh
@@ -1,4 +1,4 @@
-#curl -OL https://git.wmi.amu.edu.pl/s434784/ium_434784/raw/branch/master/who_suicide_statistics.csv
+curl -OL https://git.wmi.amu.edu.pl/s434784/ium_434784/raw/branch/master/who_suicide_statistics.csv
 
 # uciecie nazw kolumn 
 head -n 1 who_suicide_statistics.csv > names.csv
@@ -10,10 +10,10 @@ shuf who_suicide_statistics.csv > data.shuf
 # Podzial na 3 pozbiory
 
 #Ustalenie proporcji 6:2:2
-let NUMROWS=$(cat data.shuf | wc -l)
-let TEST=$((NUMROWS / 10 * 2 ))
-let DEV=$((NUMROWS / 10 * 4 ))
-let TRAIN=$((NUMROWS - DEV ))
+NUMROWS=$(cat data.shuf | wc -l)
+TEST=$((NUMROWS / 10 * 2 ))
+DEV=$((NUMROWS / 10 * 4 ))
+TRAIN=$((NUMROWS - DEV ))
 
 head -n $TEST data.shuf > data.test
 head -n $DEV data.shuf | tail -n $TEST  > data.dev