diff --git a/Notify_whatsapp.md b/Notify_whatsapp.md
index 662003a..bf076fe 100644
--- a/Notify_whatsapp.md
+++ b/Notify_whatsapp.md
@@ -25,6 +25,10 @@ The templates you generate allow you to specify `{{1}}` and `{{2}}`, etc which a
 
 If you wish to assign the `body` or `type` from Apprise, these special keywords are specified instead with the `:` (colon) prefix providing the mapping/over-ride.  For example: `?:body=1` would be accepted and would assign `{{1}}` the contents of the `body` passed into Apprise.
 
+**Additional Template Notes**
+1. The template header must be set to either '' (empty) or assigned content.
+2. Variables in the message body, if any, must use the number format, e.g. `{{1}}`, as opposed to the named variables format, e.g. `{{order_id}}`
+
 #### Example
 Send a WhatsApp Notification:
 ```bash