Error when using Ternary if...else operator

I am trying to start using shorthand javascript in my code and I am not very adept at it yet. I was trying to convert my if...else statements to ternary if...else. I am getting an error when I try.

Javascript:

if (x.includes(name)) {
  metric_val = funcOne(a);
} else if (y.includes(name)) {
  metric_val = funcTwo(a);
}

Ternary if...else

let metric_val = (x.includes(name)) ? funcOne(a) : (y.includes(name)) ? funcTwo(a);

Error:

Uncaught SyntaxError: Unexpected token ;

What am I doing wrong?