Can't save via construction script?

I’ve been stuck on something for days and could do with some help. I need to set 3 variables in construction script of a blueprint (2 Text + 1 2D Texture), then access those variables from other blueprints in other levels.

I’ve tried saving them to slot but get an error when saving via construction script.

I’ve also tried storing them in my player controller BP but cant access that via the construction script of another BP (I guess because the player controller is not in play until the game executes).

Any help would be appreciated.