Cannot use Material Element of Niagara in Sequencer

Can anyone help me?
My problem is I dont see the Toogle track when I import Niagara into sequencer, same as the Material element, how can I solve it?

Thank you very much.

The toggle track is on the NiagaraComponent itself, not the system. Slightly confusing coming from Cascade, but makes logically maybe more sense :slight_smile:

Thank you very much, I can deal with it now.