React native Reanimated: timing() duration is not working - react-native

Question

I'm trying to make element return to its initial position once PanGestureHandler is released.
onGestureEvent = event(
[
{
nativeEvent: ({ translationY, state, velocityY }) =>
cond(
eq(state, State.ACTIVE),
// ignore this part, it's working fine
[
cond(
lessOrEq(this.scrollOffset, 0),
set(
this.gestureY,
divide(sub(translationY, this.ignoredGestureY), 2)
),
set(this.ignoredGestureY, translations)
)
],
[
// here I invoke bounce back animation
set(
this.gestureY,
runTiming(this.backClock, this.gestureY, new Value(0))
)
]
)
}
],
{ useNativeDriver: true }
)
Here is runTiming function:
function runTiming (clock, value, dest, startStopClock = true) {
const state = {
finished: new Value(0),
position: new Value(0),
frameTime: new Value(3000),
time: new Value(3000)
}
const config = {
toValue: new Value(0),
duration: 3000,
easing: Easing.ease
}
return [
cond(clockRunning(clock), 0, [
set(state.finished, 0),
set(state.frameTime, 3000),
set(state.time, 3000),
set(state.position, value),
set(config.toValue, dest),
startClock(clock)
]),
timing(clock, state, config),
cond(state.finished, stopClock(clock)),
state.position
]
}
The problem is that the element returns back instantly. Why is 3000 ms duration is not working?