Yes and no.
At present, there is no way you can directly automate one parameter of an event by another parameter of the same event. (We do plan to implement that feature, but there are some technical hurdles we have to overcome first.)
You can, however, automate the parameters of an event sound module or event reference sound module on the timeline (or other parameter) of its parent event; As long as the event (reference) sound module’s trigger region is at the zero position of the parent event, the effect should be identical to automating an event’s parameter by the timeline of that same event. (Note, however, that logic markers on the timeline of either event will have their usual effect on the movement of the timeline cursor.)
Alternatively, if you add to your event an audio track whose pre-fader output linearly increases as time progresses but whose fader is set to -oo dB, you can use that track to control a Sidechain modulator on one of the same event’s parameters. This method does have its limits, however, so I advice against implementing it unless it’s really your only option.