How to make a charcter move forward always?

I am currently working on 3rd person character, I need him to perform a continous slide while the Left Trigger is pressed. I have achieved the continous sliding movement whith a Tick Event, that performs the forward movement. I have encountered with the problem that, while doing the continous forward movement i can’t move sideways. The left and right inputs are already set up. I have attached two pictures of the blueprints I am working on.
Does anyone know how to solve this problem?