Why does my dash function not work when using multiplayer?

Why does my dash function, which uses a Launch Character no longer work when in an multiplayer environment? It is run on a dedicated server with 2 clients. However, when I link these 2 clients to the same server, the dashes only work on the Host client. The other one just does a jerk forward and reverts back to original position.
Please help. Thanks.

Portion of dash function:

Did you make sure you are replicating the both the dash function and the movement of your pawn class?