Get a variable from a Widget to a BP

I try to get a Widget slider value to use it in a Blueprint.

Here is my Widget slider, working fine. Printing the value on screen every time the slider is moved.

Now my BP Construction Script, where I use a reference to the widget slider to use its value.

Finally, the Event Graph where I spawn the Widget Slider.

Obviously I’m doing it wrong as it doesn’t work. No matter what I do, the value I get in the BP is always 0, as if it couldn’t copy the Slider Value variable.

I hope to have some help for something that is surely obvious to many of you.
Thanks in advance to anyone that will take some time to help me with this.