Rust - cannot assign value global variable

Question

My code:

static LANGUAGE: &str = "Rust";
pub fn main() {
  ....
   let strings:Vec<&str>= Languages.split("|").collect();
   LANGUAGE = &strings[1].to_string();  
   println!("Value is {}", &LANGUAGE);
}

After build code error LANGUAGE = &pcnamehost[1].to_string() cannot assign. I want assign value for static variable string, pls help me, thank you