How to disable rate limit policy based on the azure subscription in Azure APIM

Question

I have a use case to use single policy.xml for different environments however the rate-limit is applicable only for certain environment.

For eg:

Dev: rate-limit is applicable (hosted in dev azure subscription)

QA: rate-limit is not applicable (hosted in test azure subscription)

Prod: rate-limit is applicable (hosted in prod azure subscription)

Update: Tried this from one of the posts here post:

    <choose>
        <when condition="@(context.Subscription.Name=="abcd")">
            <rate-limit-by-key calls="1" renewal-period="15" counter-key="@(context.Subscription.Id)" />
        </when>
        <when condition="@(context.Subscription.Name=="efgh")">
            <rate-limit-by-key calls="2" renewal-period="15" counter-key="@(context.Subscription.Id)" />
        </when>
        <otherwise />
    </choose>

Below snippet is from the inbound request and what i don't understand is the value of the first when element condition attribute is false even though it is executed from the "abcd" subscription.

choose (7.565 ms)
    {
    "message": "Expression was successfully evaluated.",
    "expression": "context.Subscription.Name==\"abcd\"",
    "value": false
}
choose (0.251 ms)
    {
    "message": "Expression was successfully evaluated.",
    "expression": "context.Subscription.Name==\"efgh\"",
    "value": false
} 

Solution that worked for me from below approaches:

<choose>
    <when condition="@(context.Request.Url.Host.Contains("dev"))">
        <rate-limit-by-key calls="1" renewal-period="5" counter-key="@(context.Subscription.Id)" />
    </when>
    <when condition="@(context.Request.OriginalUrl.Host.Contains("prod")">
        <rate-limit-by-key calls="2" renewal-period="10" counter-key="@(context.Subscription.Id)" />
    </when>
    <otherwise />
</choose>