Changing FPSController values via C#?

Hello,

I'm trying to change some FPSController values under certain conditions. Primarily when underwater, I have a detection script setup which changes fog colour and such when under a certain y position but want to know how I can reference other Javascript elements from C#.

I have my underwater.cs script attached to my main camera. Here are the things I want to effect:

• CharacterMotor.js gravity = 0

• Need some buoyancy, what could I change to simulate this? Gravity = -1 makes you rise but the movement keys make that more apparent. Not really sure what to do?

• How can I change the character controller so I can move in all directions rather than just left and right?

Just to put this into perspective:

 void SetUnderwater () 
         {
             RenderSettings.fogColor = underwaterColor;
             RenderSettings.fogDensity = 0.01f;
             //CharacterMotor.gravity = 0;
                 //Buoyancy
                 //Movement directions
             }

Thanks for your time!