Do not confused with video export.
Siwtch all the parameters you want to record in Custom Function
this mode allow you to draw a function thanks a mouse, but if the parameters are connected to a Link in a Link Bank, the shape of the function will be drawned by teh values of it.
This shape is drawned only if your timeline is in advanced->"Record custom function" mode

Beware of turn this option off when the rehearsal is ended.