LLD create item prototypes

[tomaskovicmarcel]

Hi guys,
I need create custom LLD, but i have some mistakes.

In my /etc/zabbix/zabbix_agentd.d/check_mz.conf I have:
UserParameter=discovery.mz1,/opt/mz.sh

Output from /opt/mz.sh is json:
{
"data":[
{ "{#Name}" : "car", "{#Value}":"345"}]
}

In Discovery rule I have key: discovery.mz1
In Item Prototypes I have key: mz1[{#Name}]

But this is not ok, because i got: Unsupported item key.

What I doing wrong?
Thank you.

[tomaskovicmarcel]

No, I have only this:
UserParameter=discovery.mz1,/opt/mz.sh