Save/Load game isn't working

Hello everyone. I am trying to set up a basic save/load system. The game should save when the player picks up the item which is set as a game objective. And it should load from the main menu.
I am currently testing this function with my HP only before I set up anything else. So if my character is, let’s say 50 hp whenever he picks that item up(and the game saves), he should start at 50 HP when I click “Load Game” through my main menu. Here is a screenshot of my menu widget and one from the objective-save item. My issue is that the load button restarts the level without saving the HP I had at the time of saving.