diff --git a/powerwall.sh b/powerwall.sh
index 85bca414..136d5f99 100755
--- a/powerwall.sh
+++ b/powerwall.sh
@@ -645,7 +645,7 @@ LOGROTATE(){
 
 TEST(){
 	temptotal=0
-	daysback=2
+	daysback=${1}
 	logsfound=0;
 	while IFS=$'\t' read date sensorid temp hum ;do
 		# echo date:$date sensorid:$sensorid temp:$temp hum:$hum