Applying rotation to character using FRootMotionSource

Development Character & Animation
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1

i am trying to apply rotation to a character using the uint16 function ApplyRootMotionSource" in the UCharacterMovementComponent with gameplay tasks, and the editor crashes when it tries to apply it.

i am still new to c++ programing and ue4 so i took “AbilityTask_ApplyRootMotionConstantForce” Code as an example in making my code. variables and functions declaration are almost the same

function code for applying rootmotion:

void UWOSAbilityTask_ApplyRootMotionRotation::InitAndApply()
{
	if (AbilitySystemComponent->AbilityActorInfo->MovementComponent.IsValid())
	{
		MovementComponent = Cast<UCharacterMovementComponent>(AbilitySystemComponent->AbilityActorInfo->MovementComponent.Get());

		if (MovementComponent)
		{
			ForceName = ForceName.IsNone() ? FName("AbilityTaskApplyRotation") : ForceName;

			FRootMotionSource* RootMotionSource = new FRootMotionSource();
			RootMotionSource->Duration = Duration;
			RootMotionSource->InstanceName = ForceName;
			RootMotionSource->Priority = 5;
			RootMotionSource->AccumulateMode = ERootMotionAccumulateMode::Override;
			RootMotionSource->FinishVelocityParams.Mode = ERootMotionFinishVelocityMode::MaintainLastRootMotionVelocity;
			RootMotionSource->RootMotionParams.Accumulate(FTransform(DesiredRotation, FVector(1.f, 1.f, 1.f)));
			RootMotionSourceId = MovementComponent->ApplyRootMotionSource(RootMotionSource);

			if (Ability)
			{
				Ability->SetMovementSyncPoint(ForceName);
			}
		}
	}
}