Need Help with ESP bzw D3DXVECTOR3

void ESP()
{
        PlayerPosition* pTargetPlayerPosition = 0;
	PlayerPosition* pOwnPosition = 0;
	if(g_ESP == true & g_iESP == false)//hack on off
	{
		if(*(DWORD*)(ADR_RoomState) == 1)//check if you are in room or not 
		{
	//-------------------Get X,Y,Z from Enemy----------------//
	pTargetPlayerPosition = reinterpret_cast<PlayerPosition*>(GetPlayerAddress(g_iSelectedPlayer)); //get x,y,z from selected player
        D3DXVECTOR3 View(0,0,0);
        D3DXVECTOR3 Enemy2 (pTargetPlayerPosition->X,pTargetPlayerPosition->Y,pTargetPlayerPosition->Z);
        if(GetScreenCoordFromWorld(pDevice, View, Enemy2))
        {
        DrawBox(View.x,View.y,10,10,RED,pDevice);
        }
}
}
struct PlayerPosition
{
	float X;
	float Z;
	float Y;	
};