Negative layers, internal planes of PCB

Hello, I am about to send a manufacturing request for a PCB I designed in Altium which includes internal power planes. Plane layers in Altium are shown as "Negative layers", so colour indicates absence of copper and absence of colour indicates copper. I uploaded my pcb to JLCPCB's gerber viewer and it also shows the internal plane layers in a negative view.

I'm wondering if JLCPCB will know/process these negative layers correctly by placing copper where there is no colour in the gerber view and vice versa.

Thank you, and have a great day.