Latent Steam Functions

Hello it's me again i guess :D

So I've made all steamworks leaderboard functions working in my project. However it's kinda annoying due to i have to put there a lot of delays to actually get any scores downloaded to show in game.

Here's what i want to do. I've seen some nodes like "Create Session" with exec outputs with OnSuccess and OnFailure. I've seen source code but that told me nothing.

Is there any way to make functions like FindLeaderboard or DownloadScore wait for callback from OnFindLeaderboard or OnDownloadScore? I'm trying right now to make it Latent function with Latent Action manager but with bad to no result.