Line.inc(49) : error 029: invalid expression, assumed zero
Line.inc(49) : error 020: invalid symbol name ""
Line.inc(49) : error 029: invalid expression, assumed zero

stock CreateLineSegment(modelid, Float:objlength, Float:PointX, Float:PointY, Float:PointZ, Float:DestX, Float:DestY, Float:DestZ, Float:RotX = 0.0, Float:RotY = 0.0, Float:RotZ = 0.0, Float:objlengthoffset = 0.0, worldid = -1, interiorid = -1, playerid = -1, Float:maxlength = 100.0)
{

  new id = Iter_Free(lin_Index);  << here is the problem

	if(id == 0)
	{
		print("ERROR: MAX_LINE limit reached.");
		return 0;
	}
	
	lin_Data[id][lin_maxLength]			= maxlength;
	lin_Data[id][lin_model]				= modelid;
	lin_Data[id][lin_objLength]			= objlength;
	lin_Data[id][lin_objLengthOffset]	= objlengthoffset;

	lin_Data[id][lin_posX]				= PointX;
	lin_Data[id][lin_posY]				= PointY;
	lin_Data[id][lin_posZ]				= PointZ;

	lin_Data[id][lin_dstX]				= DestX;
	lin_Data[id][lin_dstY]				= DestY;
	lin_Data[id][lin_dstZ]				= DestZ;

	lin_Data[id][lin_rotX]				= RotX;
	lin_Data[id][lin_rotY]				= RotY;
	lin_Data[id][lin_rotZ]				= RotZ;

	lin_Data[id][lin_world]				= worldid;
	lin_Data[id][lin_interior]			= interiorid;
	lin_Data[id][lin_playerid]			= playerid;

	Iter_Add(lin_Index, id);

	UpdateLineSegment(id);

	return id;
}

stock DestroyLineSegment(lineid)
{
	if(!Iter_Contains(lin_Index, lineid))
		return 0;

	for(new i; i < lin_Data[lineid][lin_objCount]; i++)
	{
		if(IsValidDynamicObject(lin_Objects[lineid][i]))
		{
			DestroyDynamicObject(lin_Objects[lineid][i]);
			lin_Objects[lineid][i] = INVALID_OBJECT_ID;
		}
	}

	Iter_Remove(lin_Index, lineid);

	return 1;
}