[ApolloScripter]

Hello samiulla, I do not know how to put the chekpoint red, but you can put some "pickup" to set the place of entry and exit, just follow the code below:

CreateDynamicPickup(modelid, type, Float, Float:y, Float:z, worldid = -1, interiorid = -1, playerid = -1, Float:distance = 100.0);

HERE, you can see all PickUp Model's ID.
CLICK HERE, for more informations.
CLICK HERE To read a red checkpoint tutorial.