Can't add element trigger on slider change

Not sure if it’s a bug or if i’m doing something wrong.
image

As you can see, the first two slider elements have interactions (Slider change) . But I can’t add them to the other elements, as the option is disabled. Webflow might not be recognizing them as slider elements?

image

or what am I doing wrong? I have multiple sliders and I get this same behavior in all of them.