Widget text doesn't update in the client's side

Hi guys,

I’m trying to create a widget where the players see their bullets on the screen. The current blueprint works for the server but not for the client. The ammo variable is from the weapons blueprint spawned from the character blueprint. Can someone lighten me up on how to do this things right? Thanks in advanced.

I fixed it just a wrong RPC call.

How did you solve it? Can you help sharing your solution?