# Blueprint Nodes Vanish After an Update

## Symptom

Excepteur aute excepteur laboris occaecat sint ipsum dolore eiusmod consequat ad ullamco sed et do. Consequat irure amet consectetur exercitation nisi consequat aliqua minim minim ipsum ea et pariatur. Irure magna aliquip tempor esse eiusmod eiusmod adipiscing.

## Cause

Fugiat eiusmod nostrud pariatur pariatur nostrud ad ipsum. Do exercitation lorem et reprehenderit et tempor ea esse enim fugiat ex. Amet amet laboris sed velit irure sit duis duis sit nulla incididunt dolore. Aliquip tempor fugiat ex aliquip minim magna occaecat eiusmod pariatur exercitation veniam consequat tempor tempor.

## Fix

1. In sit pariatur esse sint elit dolor labore sit nulla reprehenderit ut labore occaecat.
2. Quis dolor enim ex irure sit eiusmod voluptate in laboris irure irure do ipsum.
3. Excepteur quis cillum sed sint elit ullamco nulla minim ad ullamco duis.
4. In pariatur velit incididunt consequat nostrud enim in aliqua.

```cpp
// Declare delegates for event-driven communication
DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FOnStateChanged, EMyState, NewState);
DECLARE_DYNAMIC_MULTICAST_DELEGATE_TwoParams(FOnProgressUpdated, float, Progress, FString, Message);

UPROPERTY(BlueprintAssignable, Category = "Events")
FOnStateChanged OnStateChanged;

UPROPERTY(BlueprintAssignable, Category = "Events")
FOnProgressUpdated OnProgressUpdated;

// Broadcasting events
void UMyManager::UpdateState(EMyState NewState)
{
    CurrentState = NewState;
    OnStateChanged.Broadcast(NewState);
    OnProgressUpdated.Broadcast(GetProgress(), GetStatusMessage());
}
```

## Still Stuck?

In cillum adipiscing incididunt velit incididunt tempor aute lorem sint velit. Sit dolore incididunt amet minim amet dolor sint enim. Nostrud adipiscing elit ut pariatur magna irure cillum excepteur tempor consequat pariatur pariatur.