Where does the slider get the images from?

Question

MODX

Good afternoon. There is someone else's site written in MODX Revo. I can not find where the path is written, where the slider takes the images from. As I understand it, the path is set in some variable of these two chunks?
slider

<div class="header-blok-slider">
    <!-- SLIDER -->
          <div class="slider-blok">
            <div class="owl-carousel">
                
                
                
            </div>
          </div>
         <script>
                   $('.owl-carousel').owlCarousel({
            loop:true,
            margin:0,
            nav:true,
            animateOut: 'fadeOut',
            animateIn: 'fadeIn',
            items:1,
            smartSpeed:250,
            autoplay:true,
            autoplayTimeout:10000,
            autoplayHoverPause:true
          })
          </script>
    <!-- SLIDER -->

</div>

slider-item

<div class="item-slider"><img src="" width="100%" /></div>

Answer 1

&tvname=`image`from this TV-set for this resource &docid=`1`(probably the main page)
Filled in the admin panel