# Set action duration or speed [Back to Use gameplay actions](https://rustic-game-engine.pages.dev/markdown/guides/gameplay-actions.md). Follow [Set up gameplay actions](https://rustic-game-engine.pages.dev/markdown/guides/gameplay-actions/setup.md) before running this Lua example. ```lua return { Start = function() local owner = rustic.entity_id() Movement.moveTo(owner, Vector3(10, 0, 0), { speed = 5, easing = Ease.OutCubic }) -- Alternatively: { duration = 2, easing = Ease.InOutSine } end } ``` Dynamic-language movement/tween helpers accept either a duration number or an options object/table with exactly one of `duration` or `speed`. Speed is units/second (radians/second for quaternion rotations). For finite tweens, speed determines the total duration; easing intentionally changes instantaneous speed. Invalid/non-finite values and non-positive speeds are rejected. A zero finite duration snaps on the next advancing frame.