Help whit my simple script

Ive getting syntax errors on line 11 in my script whats wrong? here is the script

default
{
state_entry()
{
owner=llGetOwner();
llListen(0,"",owner,"");
}
 
listen(integer channel, string name, key id, string message)       
{
}
if(message=="Start")
{
llWhisper(0,"Starting...");
}
else
{
    llWhisper(0,"Wrong command");
}

Double brace after the listen declaration "{}" which puts the if() outside any code block.

I assume you have declared "owner" above the snippet, if not you need "key owner;".

Can you show me the whole script. When its edited because i can't script good and my English isn't the best.

default {
  state_entry() {
    key owner = llGetOwner();
    llListen(0,"",owner,"");
  }

 
  listen(integer channel, string name, key id, string message)  {
    if(message=="Start") {
         llWhisper(0,"Starting...");
      } else {
         llWhisper(0,"Wrong command");
      }
  }
}

This code has been tested in-game.

If you don't need to refer to the key 'owner' later in the script then you can just set the listen function to: llListen(0,"",llGetOwner(),"";

But if you are, then you need to declare it a global variable. Which means putting:

key owner = llGetOwner()

ABOVE the default state.