fill the area below a line with color

[ToJBue]

Using the line plot ID I'm wondering if there is a way to fill the area below the line with a defined color. In detail, my task is to visualize a spectrum (using the line plot) and highlight  peaks by filled areas.

[s.lopez.santamaria]

I would like to do the same, too. I am trying to use the Filled Contour Plot VI, but I haven't been very successful yet...