Internal Utility Function To Report Back Boolean in Blueprints

I am trying to use an internal utility function (FPaths::FileExists) to check whether a file is present in a directory.Then report a boolean back to my Level Blueprint.

I believe I need to run the syntax below, but I am not sure where to input this. Up until now my entire project has been in Blueprints, but I believe this will require a bit of C++. I was hoping it was going to be as simple as the “Execute Console Command” node, but for C++ code. However, I am thinking it will not be that simple. Any direction on where I can go from here would be greatly appreciated.

static bool FileExists
(const FString & InPath)