Rule Language Grammar : Attributes

Attributes
TIBCO BusinessEvents provides attributes that you can use in rules to access information of various kinds. The attributes are listed in Table 31. Use the @ operator to access attributes.
Table 31 Attributes 
The time to live of the event as specified in the configuration. (This is not the time-to-live remaining.)
The number of units between creation of successive time events.
The time to live of the event as specified when scheduling the event. (This is not the time-to-live remaining.)
Broad category of advisory, for example, an exception.
The parent concept instance. (This is treated as a concept reference in the language.)