Logic Pro question

[monkeylizard]

Apologies is this isn't in the right place, but I took a best guess.

Anyway, a question (with a brief explanation first):

I have a number of audio tracks in a Logic project, to which I want to apply volume automation. The trouble is, I want to apply a sine wave (of differing frequencies) to each track for this purpose.

So... is there a way of applying modulation to the volume parameter of a track that doesn't involve me having to draw the sine waves in by hand? (I'm not trying to avoid this option purely out of laziness - I don't think it would be accurate enough, either). Or is there a simpler way that anyone knows of?

Thanks for any help you can give me with this.