SYNOPSIS
json_add_array_string_metric:long(array_name:string,metric_name:string,metric_description:string)
ARGUMENTS
array_name
- The name of the array the string metric should be added to.
metric_name
- The name of the string metric.
metric_description
- Metric description. An empty string can be used.
DESCRIPTION
This function adds a string metric to an array, setting up everything needed.

