[ReD_HunTeR]

try this?

pawn Code:

if(!strcmp(cmdtext, "/cmds", true))
    {
        if(IsPlayerConnected(playerid))
        {
            new string[300]; // You didnt add this line.
            strcat(string, "{FF0000}Player:{FFFFFF} /O = Body objects  /Skin = Change your skin  /kill = suicide  /Pm {id} {message}  /mycolor = change your color\n/Ptele {ID}  /Top5\n\n");
            strcat(string, "{FFFFFF} /Teles = important teleport  /Teleports = Many Teleports + Cities\n\n");
            strcat(string, "{FFFFFF} /Car [name/id]  /V = Vehicles List  Press 'HORN' button to fix car\n\n");
            strcat(string, "{FFFFFF} /Admins = Show online admins\n\n");
            ShowPlayerDialog(playerid, DIALOG_DCMDS, DIALOG_STYLE_MSGBOX, "{FFFF00}StuntNoobZ - Rules!",string,"Okay","");
            return 1;
        }