Anti Ship kill script crashes server

[Dimplex]

Hey all,

I have a question about my Anti Ship Kill script.
I have made a anti ship kill script.
Here is my script:

Code:

public OnPlayerDeath(playerid, killerid, reason)
{
    new playercash;
    new killedplayer[MAX_PLAYER_NAME];
    new string[256];
    new oldlevel;
    new newlevel;
    new jailstring[90];
    new killername[MAX_PLAYER_NAME];
   
    playercash = GetPlayerMoney(playerid);

    for(new j=0; j < MAX_SHIPZONE; j++) {
        if(killerid == playerid) return SendClientMessage(playerid,COLOR_RED,"You killed your self on ship");
        if(isPlayerInArea(playerid,ShipZone[j])) {
            GetPlayerName(killerid, killername, sizeof(killername));
            format(jailstring, sizeof(jailstring), "Newsmessage: %s has been jailed for Shipkilling", killername);
            SendClientMessageToAll(COLOR_WHITE, string);
            SetPlayerPos(killerid, 264.6288,77.5742,1001.0391);
            SetTimer("ShipJailRelease",180000,0);//after 3 minutes
               }
        }

This is the begin of my, on player death callback.
But, if i do /kill on the ship, the server crashes and gives the windows foalt, dunno how to explane in english, becoase my windows is dutch
And here is my /kill script.

Code:

    if(strcmp(cmd, "/kill", true) == 0) {
     SetPlayerHealth(playerid,0);
     if(Variables[playerid][Registered]){
            MyDeaths[playerid]++;
        }
            return 1;
    }

I hope you guys can help me 

- Dimplex