under #define :
new pdgate;
new pdngate;
new pdngatels;
new pdgatels;

under AddStaticVehicleEx :
pdgatels = CreateObject(976, 1549.284668, -1626.937744, 12.544723, 0.0000, 0.0000, 90.0000);
pdngatels = CreateObject(976, 1549.304565, -1636.401001, 12.544723, 0.0000, 0.0000, 90.0000);
pdgate = CreateObject(971,1588,-1638.332275,15.267113,0.000000,0.000000,179.811325);
pdngate = CreateObject(971,1588,-1638.332275,15.267113,0.000000,0.000000,179.811325);

under public OnPlayerCommandText(playerid, cmdtext[]) :

http://pastebin.ca/969370