Let's create a VCI that starts an animation when grabbed using onGrab(target),
and stops the animation when ungrabbed using onUngrab(target).

https://virtualcast.jp/products/f6415cfeabdd56f12b31ceceb4024d2dd7b45d13ddd82f7a7be55a05d09c7e05

Each objects are configured as shown below:

We need an animation that turns the fan, so let's create one.
Select the root VCI Object (The GameObject with VCI Object component attached). Open the [Animation] tab and select [Create] to create an animation clip.

There are several important settings when creating an animation.
The animation won't work if you forget these settings so be sure to configure them.

Components for each object are as shown below.
We don't add anything to the fan and the base.

main.lua

function onGrab(target)--When grabbed
    vci.assets._ALL_PlayAnimationFromName("fan_rotate_anm",true)--Specifying true will loop the animation
end
 
function onUngrab(target)--When the hand is released
    vci.assets._ALL_StopAnimation()--Stops an animation
end