How to change session timeout in confluence 9.2.9 lts datacenter?

[steven vereen]

Confluence is running in an EKS environment. 

I'm using the current version of the helm chart 2.0.4. 

    set {

        name = "confluence.session.timeout"

        value = "2"

    }
I've also used:

    }

    set {

        name  = "confluence.additionalEnvironmentVariables[0].name"

        value = "ATL_CONFLUENCE_SESSION_TIMEOUT"

    }

    set {

        name  = "confluence.additionalEnvironmentVariables[0].value"

        value = "2"  # 2 minutes

        type  = "string"

Neither option works.