[Kriag]

Its been a long time since I made addons (since tbc) and now I am at a loss on things, at the moment making a small addon for a friend that keeps logs of what he does or casts...For some reason I cannot think of a way for the addon to check if player is casting hearthstone and to logg it :/ Trying to add a small ding sound during 1/2 way of cast of it which then logs the point at the chime....what is the simplest way to check if player is channeling the hearthstone? :s Does it involve UNIT_SPELLCAST_CHANNEL_START or is it something completely different? And how would I use it as a example? :/