What is the easiest way to set text variables for many blueprint instances?

I have a blueprint class with Mesh, Rotating Movement and a public Text variable (pic 1). There are many instances of this class on my level and they all have different meshes, movements and texts. But the first two can be easily edited directly from the level editor, while I don’t see Text var in the Details window (pic 2). So I have to set all texts value in the level blueprint, which is not very convenient (pic 3). How do I add my Text variable to Details window? Or, maybe, there’s another way to set it for multiple instances without creating Set and object reference nodes (pic 3) for each instance?

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106340-pic2.png

Oh, in fact, there are public variables in Details. But non-component ones are in special section “Defaults”.