Debug Printing Text Through Matinee View Target

I have a sidescrolling game setup where I have a camera moving across the screen via matinee, and Set the View Target with Blend via level blueprint to that camera so that the character has to run across the screen in time with the camera.

I am adding simple pickup items, and wish to watch values of certain variables from my Character via debug prints.

I tried using:

if (GEngine)
{
GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Yellow, TEXT(“COINS THIS LEVEL IS NOW:”));
GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Yellow, FString::SanitizeFloat(coinsThisLevel));
}

However this does not print anything to the screen. I am wondering if it is due to using the matinee camera as the viewport?