Hi I want to know if it is possible to scroll an image up and down inside a window with a vertical slider? and if it is possible, how?.

vslider(5,20,314,dot_png,0,1000,my_var);


I know that with the panel I'm using I have to add the vscroll element, but what should I do with the variable name "my_var"?
thanks for reading this, I hope someone can help me.