How to make a UPROPERTY instance-wise?

Hi, I’m totally new to UE4 and I was wondering, how I can edit instance-specific values of a blueprint. E.g. when I create an instance of my blueprint in the editor, and I wanna change a value for this instance only. Is that even possible or are the settings for each blueprint static ?

edit: Or do I have to create a new blueprint for each variety of the object in the editor?

right click on the Blueprint

then select the option to make child of

or similar phrasing

then that child blueprint will have all of the parent blueprint stuff already

and you can just change properties or add new BP graph code