Customize web vitals metric on Cloud Watch RUM

Hi everyone, I am creating RUM dashboard on cloud watch and have demand to custom the web vitals metric.

I want to change:

• Add/ Edit the text and the threshold for LCP categories: Positive: (<2s), Tolerable: (2-5s), Frustrating: 5-8s, Poor: > 8s. I also tried to find documentation on AWS RUM web client: https://github.com/aws-observability/aws-rum-web/blob/main/docs/configuration.md but nothing helpful.

Really appreciate your help. Thanks