Question PhysicsWorld.ApplyLinearImpulse is not working

Hi! I have some issue with the following code:

Code (CSharp):

1. using System;
2. using Code.QTry.Components;
3. using Unity.Entities;
4. using Unity.Mathematics;
5. using Unity.Physics;
6. using Unity.Physics.Extensions;
7. using Unity.Physics.Systems;
8. using UnityEngine;
9.  
10. namespace Code.QTry.Systems
11. {
12.     [UpdateInGroup(typeof(FixedStepSimulationSystemGroup))]
13.     [UpdateAfter(typeof(PhysicsInitializeGroup))]
14.     [UpdateBefore(typeof(PhysicsSimulationGroup))]
15.     [RequireMatchingQueriesForUpdate]
16.     public partial class ClickKeyAndAddImpulseSystem : SystemBase
17.     {
18.         protected override void OnUpdate()
19.         {
20.             if (!Input.GetKey(KeyCode.Space))
21.                 return;
22.             var world = SystemAPI.GetSingletonRW<PhysicsWorldSingleton>();
23.             var deltaTime = SystemAPI.Time.fixedDeltaTime;
24.             CompleteDependency();
25.             foreach (var (clickKeyAndAddImpulse, entity) in SystemAPI.Query<RefRO<ClickKeyAndAddImpulse>>()
26.                          .WithEntityAccess())
27.             {
28.                 var impulse = new float3(0f, 0f, 1f) * 10f * deltaTime;
29.                 var index = world.ValueRW.PhysicsWorld.GetRigidBodyIndex(entity);
30.                 world.ValueRW.PhysicsWorld.ApplyLinearImpulse(index, impulse);
31.             }
32.         }
33.     }
34. }

I run the game and nothing happen when i click <space>. The package i use is Unity.Physics 1.0.0-pre.44

Help! >...<