How can I delete blip attached to some element?

[NoviceWithManyProblems]

why this doesn't work?

local marker = createMarker(--[[...]])
createBlipAttachedTo(marker --[[...]])
addEventHandler("onClientMarkerHit", marker, function(he, md)
    destroyElement(source)
end)

 I want to destroy marker with blip

[N3xT]

local marker = createMarker(--[[...]])
local blip = createBlipAttachedTo(marker --[[...]])

addEventHandler("onClientMarkerHit", marker, function(he, md)
    destroyElement(source)
    destroyElement(blip)
end)