[xRadical3]

You first should create a var for the actor..

pawn Code:

new MyActor;

Now CreateDynamicActor symbol take OnGameModeInit:

pawn Code:

public OnGameModeInit()
{
MyActor = CreateDynamicActor(modelid, Float:x, Float:y, Float:z, Float:r);
//(modelid = skin id, float x, float y, float z, r = angle)
return 1;
}

And how to use SetDynamicActorPos:

pawn Code:

SetDynamicActorPos(MyActor, Float:x, Float:y, Float:z);