Can't send multiple "Text Input" fields with Webhook

Hi,

Should it be possible to send multiple “Text Input” fields with Webhook?

When I try Webhook with one “Text Input” field, it works fine. When I try with more than one, it doesn’t work.

URL: http://test.xxxxx.xxx/api/meteringData.php
Method: POST
Content/type: application/json
Body:
{
“meter_id”:"/pin[0]/",
“temp_int”:"/pin[1]/",
“temp_ext”:"/pin[2]/"
}

Thanks,
Tipo