monitoring bandwidth from zabbix using vnstat giving error Unknown metric

[islam]

Hello,
I am trying to monitor my vps bandwidth using vnstat but I setup it and import template and link it but the latest data showing error Unknown metric system.currenthour
please check the attachment

[islam]

update please check attachment

[islam]

this is example of the shell script that that extract the values for zabbix from vnstat and calc the total_outbound_for_current_hour.sh

tempout1=$(vnstat -h| tail -n 2| awk -F\  '{ print $11}'| tail -n 1| awk -F\, '{ print $1}')
tempout2=$(vnstat -h| tail -n 2| awk -F\  '{ print $11}'| tail -n 1| awk -F\, '{ print $2}')
o=$tempout1$tempout2
bandwidth_out_unit=$(vnstat -h| tail -n 9| awk -F\) '{ print $6}'| head -n 1|awk -F\( '{ print $2}')
#echo $bandwidth_out_unit
case "$bandwidth_out_unit" in
KiB)    bandwidth_out_number_Byte=$(echo "$o*1024"| bc)
;;
MiB)    bandwidth_out_number_Byte=$(echo "$o*1024*1024"|bc)
;;
GiB)    bandwidth_out_number_Byte=$(echo "$o*1024*1024*1024"|bc)
;;
TiB)    bandwidth_out_number_Byte=$(echo "$o*1024*1024*1024*1024"|bc)
;;
esac
#echo $bandwidth_out_number_Byte

echo $bandwidth_out_number_Byte

[cyber]

First about unknown parameter... Have you defined your userparameters for this "system.currenthour" parameter?
Second one suggests, that you do not get numeric (float) values from agent but string...
I'm not familiar with vnstat output... What this line should do "o=$tempout1$tempout2" Concatenate 2 strings? numbers? And then you calculate something based on that? Maybe you do get error message as a result ...

[islam]

I just downgrade the version and result is showing fine thank u