====Last Timestamp====
Returns the date of the last change of state or update of value for the Unit, last time a global script was run and as of build 834 the last time a packet was received from an interface.

===Usage:===
**last timestamp of** (name of unit, global script or interface)

===Examples:===
<code applescript>
set MyDate to last timestamp of "Kitchen Motion"
write log "last kitchen motion was on " & (MyDate as text)
</code>