[Sparkie]

Try doing it like this;
new Float:x, Float:y, Float:z, Float:a;

Code:

GetPlayerPos(playerid, x, y, z);
GetPlayerFacingAngle(playerid, a);
PlayerInfo[playerid][PosX] = x;
PlayerInfo[playerid][PosY] = y;
PlayerInfo[playerid][PosZ] = z;
PlayerInfo[playerid][Angle] = a;