How to find the last subscription amount variable of a member for template email?

Using my Dolibarr HR modules
1

Hello,

I’m using a self-host Dolibarr version since version 9 for an organization which promote Free Softwares.

In the email template “SendingReminderForExpiredSubscription” there is a variable named “MEMBER_LAST_SUBSCRIPTION_DATE_END”.
But I can’t find the amount of this subscription.
I look for it in the htdocs/core/lib/functions.lib.php
but there are only :
MEMBER_LAST_SUBSCRIPTION_DATE
MEMBER_LAST_SUBSCRIPTION_DATE_START
MEMBER_LAST_SUBSCRIPTION_DATE_END

The doc wiki doesn’t mention any variable for these templates (like MEMBER_FULLNAME).

Can I find somewhere how to calculate this amount which is present in my database ?

Thanks a lot…