Help/Support I need help with hooks and pointers please.

[aQReh 486 iPhone 11 14.3]

I am making fly function which will make my character fly but its not working as it should be i dont know why its not working. It was done similarly on android i recreated it on ios here is what i have done.
 

void (*Old_PlayerController_Update)(void *myPlayer);
void PlayerController_Update(void *myPlayer)
{
    if (myPlayer != NULL) {

        // Function pointers for Rigidbody methods
        void (*set_velocity)(void *, Vector3 value) = (void (*)(void *, Vector3))getRealOffset(0x2785420);
        void (*MovePosition)(void *, Vector3 position) = (void (*)(void *, Vector3))getRealOffset(0x2785E10);
        Vector3 (*get_posRigidbody)(void *) = (Vector3 (*)(void *))getRealOffset(0x2785C18);

        if (show_fly){       
            void *myRigidbody = *(void **)((uint64_t)myPlayer + 0x428); // Get Rigidbody pointer
            if (myRigidbody != NULL) {
                Vector3 MyPos = get_posRigidbody(myRigidbody); // Get current position

                set_velocity(myRigidbody, Vector3(0.0f, 0.0f, 0.0f));

                // Fly up
                if (setFly) {
                    MovePosition(myRigidbody, Vector3(MyPos.x, MyPos.y + valueFly, MyPos.z));
                    setFly = false; // Reset after moving
                }

                // Fly down
                if (setFly2) {
                    MovePosition(myRigidbody, Vector3(MyPos.x, MyPos.y - valueFly, MyPos.z));
                    setFly2 = false; // Reset after moving
                }
            }
        }
    }
    return Old_PlayerController_Update(myPlayer);
}


and i hook uodate like this:
HOOK(0x101E7C8, PlayerController_Update, Old_PlayerController_Update);


here functions from dump.cs:
functions or offsets in dll arelike this:
// RVA: 0x2785E10
	public Void MovePosition(Vector3 position) { }

// RVA: 0x2785420
	public Void set_velocity(Vector3 value) { }

// RVA: 0x2785C18
	public Vector3 get_position() { }

 
Here is preview what it does when i activate this function try to fly:
https://file.io/OZrl5THtXDf7