UMG - Populate vertical box with user created widgets via blueprint and change their default name

I created widget UI_Slot (just a button and an image).
Then I created another widget with vertical box which I populate it with UI_Slot widgets via blueprint (and there are going to be a lot widgets in this vertical box).

When I print string the names of the child widgets inside the vertical box it prints UI_Slot_C_0, UI_Slot_C_1, UI_Slot_C_2 … and so on.

Is the a way to change the default name of the child widgets via blueprint when I populate the vertical box?

PS- I can change the widgets name manually when I place them in the hierarchy panel.

Thanks in advance