Access BP variable in C++

[andrea.b]

@Ahmad_Gon

Hey, I am New to Unreal Engine 4,
Is there a way to read BP variable inside C++ code ?
for example I created a int32 variable in BP and I want to read this in C++ how can I do that ?

Assuming you have a reference to the Blueprint class where this variable is defined and a reference to the Blueprint instance of this class, you can do this:

UIntProperty* IntProperty = FindFieldChecked<UIntProperty>(BlueprintClass, TEXT("VarName"));
int32 VarValue = IntProperty->GetPropertyValue_InContainer(BlueprintInstance);

FindFieldChecked will trigger an assertion if the variable does not exist.

Anyway if you have a base class defined in C++ it’s better to define that variable inside the native class, as other members already pointed out.