SLO value not on a unique graph and not identifying bad and good events

Hi,
GCP don't show me SLO on a unique graph and can't identify the count of "bad" and "good" events when filtering on 'custom.googleapis.com/events_count' metric.

fetch global
| metric 'custom.googleapis.com/events_count'
| filter
(metric.error_budget_policy_step_name == 'Last 28 days'
&& metric.feature_name == 'process' && metric.service_name == 'prod'
&& metric.slo_name == 'availabilty')
| group_by 1m, [value_events_count_mean: mean(value.events_count)]
| every 1m
| group_by [metric.good_events_count],
[value_events_count_mean_mean: mean(value_events_count_mean)]

Any idea ?