[standalone@localhost:9990 /] /subsystem=undertow/server=default-server/http-listener=default:write-attribute(name=max-cookies, value=2147483647)
{
    "outcome" => "success",
    "response-headers" => {
        "operation-requires-reload" => true,
        "process-state" => "reload-required"
    }
}
[standalone@localhost:9990 /] /subsystem=undertow/server=default-server/http-listener=default:write-attribute(name=max-cookies, value=2147483648)
{
    "outcome" => "failed",
    "failure-description" => "WFLYCTL0097: Wrong type for max-cookies. Expected [INT] but was STRING",
    "rolled-back" => true,
    "response-headers" => {"process-state" => "reload-required"}
}

[standalone@localhost:9990 /] /subsystem=undertow/server=default-server/http-listener=default:write-attribute(name=max-post-size, value=9223372036854775807)
{
    "outcome" => "success",
    "response-headers" => {
        "operation-requires-reload" => true,
        "process-state" => "reload-required"
    }
}
[standalone@localhost:9990 /] /subsystem=undertow/server=default-server/http-listener=default:write-attribute(name=max-post-size, value=9223372036854775808)
{
    "outcome" => "failed",
    "failure-description" => "WFLYCTL0097: Wrong type for max-post-size. Expected [LONG] but was STRING",
    "rolled-back" => true,
    "response-headers" => {"process-state" => "reload-required"}
}