LLD macro does not work

[SStepanov]

Hello, everybody!

I am new to zabbix, and I cannot understand why my LLD is not working.
Here are some details:

I have a discovery that returns this json:

[
{
"{#NAME}": "zabbix_zabbix-web-nginx-pgsql_1"
},
{
"{#NAME}": "zabbix_zabbix-server_1"
},
{
"{#NAME}": "zabbix_postgres-server_1"
},
{
"{#NAME}": "zabbix_zabbix-agent_1"
}
]

as you can see, these are macro for container names.

Then, I set up some item prototypes:


The main item prototype looks like this:



but when I apply my discovery rule to a host, it throws exceptions:



So, as I understand, these errors mean that zabbix simply ignore my macro and does not replace {#NAME} with a value from json.

What am I doing wrong?