"cloudwatch" How do I integrate multiple data points?

I’m a beginner.
I want to integrate 4 metrics with Grafana using cloudwatch as data source
I want to make a graph that selects only the maximum value, but I’m having a problem because I can’t do it well.

I think it can be realized with grafana expression, but please tell me how to write it.

I want to select the maximum value of Server 01 to 04 and graph it as shown below.

【Current status with cloudwatch】
Current_status_with_cloudwatch

【I want to realize with grafana】
I_want_to_realize_with_grafana

※I’m Japanese, I’m sorry I’m not good at English