No problem

In your Outliner, select your stroke.
NOT your curve, just your stroke.

Then, look in the channel box (on the right).
You will notice that your SHAPES attributes are now listed.

Scroll ALL the way down intill you see the Black BOLD word:
"INPUTS".

Below that you will see your brush name and below that a
"TIME" word.

Click on TIME, and TONS more attributes will appear.

Scroll down and try these settings:

CAST SHADOWS - ON
FAKE SHADOW - NONE
REAL LIGHTS - ON


Cool?