You can use the timer behavior, or set up your own timer/counter variable.
Instance Variables:
Duration=1.5
IsMoving=false
(On Trigger, Object IsMoving=false)
Start timer for Self.Duration seconds
Set Object.IsMoving=true
(Object IsMoving=true)
Set Object Y position to lerp(270, 80, Self.Timer.CurrentTime/Self.Duration)
(Object OnTimer)
Set Object.IsMoving=false
Set Object Y position to 80
This does take 3 events though. Recommend also having start position and end position as instance variables, which you set upon triggering the first event