[Emmet_]

@Wolfmaster: You've declared a variable that you've never used and other things. Here, I've fixed the code a bit:

pawn Code:

dcmd_tazer(playerid, params[])
{
    new Float:X, Float:Y, Float:Z, player1;
    if(sscanf(params,"u", player1)) return SendClientMessage(playerid, 0xFF0000AA, "[ERROR] USAGE: /tazer [id]");
    if(player1 == INVALID_PLAYER_ID) return SendClientMessage(playerid, 0xFF0000AA, "[ERROR] This player is offline!");
    if(IsCuffed[player1] == 1) return SendClientMessage(playerid, 0xFF0000AA, "[ERROR] This player already shocked!");
    if(gTeam[playerid] != TEAM_COP && gTeam[playerid] != SWAT)
    {
        SendClientMessage(playerid,COLOR_RED,"You are not a Police Unit!");
        return 1;
    }
    GetPlayerPos(player1, X, Y, Z);
    if(IsPlayerInRangeOfPoint(playerid, 20.0, X, Y, Z))
    {
        TogglePlayerControllable(player1, false);
        IsTazed[player1] = 1;
        GameTextForPlayer(player1, "~r~ Shocked!", 4000, 4);
        SetTimerEx("tazertimer", 7000, false, "u", player1);
        SendClientMessage(playerid, 0xFF0000AA, "{00FF00}[SUCCESSFUL SHOCKED!]");
        SendClientMessage(player1, 0xFF0000AA, "{FF0000}You have shocked by a Police Unit!");
    }
    return 1;
}