Bullet 2 based on Bullet 1 choice

I have two bullets:
 
Safety: Yes, No
Routing: Standard, Expedited.
 
If User picks Safety:Yes, I want the Routing to automatically display as Expedited.
 
What's the correct JavaScript code for this?
 
Here's the code I tried that didn't work:
 
if (this.rawValue == 1)
{
Routing.Standard.rawValue=off;
Routing.Expedited.rawValue=on;
}
else if
{
(this.rawValue== 2)
Routing.Expedited.rawValue=off;
Routing.Standard.rawValue=on;
}