If u want to do really smooth put the trigger "when this reaches a specific frame (frame)
Then repeat this every 0.167 seconds
Move Y(or x) axis 0.005 (relative)
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Wait (n) seconds
Stop repeating
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For disappearing:
when this reaches a specific frame (frame)
Then repeat this every 0.167
seconds (modify propriety)
Set opacity to -0.005
Trust me its like how BLurie animates