Node-red-contrib-zabbix-sender example please

Trying to use node-red-contrib-zabbix-sender but it just isn't working per documentation.

I am on the zabix seerver sending to the localhost server

The message in is correct from debug.

12/8/2019, 8:49:54 AMnode: 4becf582.f4eaa4
msg : Object
_msgid: "b8c45c95.0e026"
topic: ""
payload: 55.504
filename: "/sys/class/thermal/thermal_zone0/temp"

msg.payload = [
"Zabbix server",

The error is as follows
12/8/2019, 8:49:54 AMnode: a7e9f61a.a8b02
msg : string[35]
"Incorrect payload, must be an array"

Any help here?