Message variables for Notification Profiles

Message variables for Notification Profiles

I'm trying to get the "measured value" into an e-mail notification profile.
 
There is no predefined value in the list, something like $value,
that can be used in the mail Subject text.
 
As we use our e-mail system also for sending out SMS text messages,
the message should be truncated as much as possible. Max. 144 char.
 
For the notification of environment/temperature values I would like to be
able to send the actual measured value in the Subject field.
 
Is there a $string that can be used? Which one holds the "measured value"?
 
Guido Beijderwellen

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