I am creating a dashboard that has different types of widgets. I want to make this dashboard as customizable as possible using the template variables. For this reason, I have a template variable that stores the env value.

In a service summary widget, it needs env value. Now, I am using the template variable to get the value there but it is not working.

widget {
    trace_service_definition {
        display_format     = "two_column"
    ==> env                = "$env.value"
        service            = "abcd"
        show_breakdown     = true
        show_distribution  = true
        show_errors        = true
        show_hits          = true
        show_latency       = true
        show_resource_list = false
        size_format        = "medium"
        span_name          = "metric.name.client"
        title              = "Service summary"
        }
        widget_layout {
        x      = 0
        y      = 2
        width  = 8
        height = 9
        }
}

Template variable

template_variable {
name    = "env"
prefix  = "env"
default = "dev"

}

Is there a way to use the template variable to get the value?