Update powerwall.sh

powerwall.sh

@@ -77,10 +77,10 @@ CHECKTEMP_SERVICE(){
 					echo "($datetime) CRITICAL: $temp_f°F - (Difference of $temp_diff°)"
 					
 				else
-					if [ "$last_temp" > "1" ]; then
+					if [ $last_temp -gt 1 ]; then
 						echo -e "($datetime) NORMAL TEMP: $temp_f°F\nPrevious Temp: $last_tempf°FF" | mail -s "${1} BACK TO NORMAL" $email_alert
 						echo "alert sent"
-					elif [ "$last_temp" == "0" ]; then
+					elif [ "$last_temp" = "0" ]; then
 						echo "NORMAL TEMP: $temp_f°F" | mail -s "${1} TEMP NORMAL" $email_alert;
 					fi
 					last_temp=1