Figure legend mismatch when using gobjects

I was trying to assign legends to a series of Line objects in a gobjects array. I expected the legends to be assigned to the 6 thin solid lines. However, they seemed to be assigned to 6 lines with different line width and style (see the code and figure below). I would like to know if I misused gobjects or legend.

My code:

figure;
GObjects = gobjects(18,1);
colors = [blue; orange; yellow; purple; green; sky]; % user-defined colors: [r g b]
for i = 1:6
    GObjects(i) = line(0:200,data_normal(:,i+3),'Color',colors(i,:),'UserData',i); 
    GObjects(i+6) = line(200:400,data_down(:,i+3),'Color',colors(i,:),'LineWidth',1,'LineStyle',':','UserData',i+6); 
    GObjects(i+12) = line(200:400,data_up(:,i+3),'Color',colors(i,:),'LineWidth',1,'UserData',i+12); 
end
legend("r bound","m bound","ns bound","r elong","m elong","free")

% I also tried: 
%
% legends = ["r bound","m bound","ns bound","r elong","m elong","free"];
% for i = 1:6
%     legend(GObjects(i),legends(i))
% end

My result:

Answer 1

[VBBV]

Check the answer given by @Steven Lord in the below link

https://in.mathworks.com/matlabcentral/answers/244707-how-to-change-order-of-legends

figure;
GObjects = gobjects(18,1);
colors = [blue; orange; yellow; purple; green; sky]; % user-defined colors: [r g b]
for i = 1:6
    GObjects(i) = line(0:200,data_normal(:,i+3),'Color',colors(i,:),'UserData',i); 
    GObjects(i+6) = line(200:400,data_down(:,i+3),'Color',colors(i,:),'LineWidth',1,'LineStyle',':','UserData',i+6); 
    GObjects(i+12) = line(200:400,data_up(:,i+3),'Color',colors(i,:),'LineWidth',1,'UserData',i+12); 
end
legend(GObjects(:)) % from that answer

Answer 2

[Sulaymon Eshkabilov]

Try this syntax:

figure;
GObjects = gobjects(18,1);
L = {"r bound","m bound","ns bound","r elong","m elong","free"};
colors = [blue; orange; yellow; purple; green; sky]; % user-defined colors: [r g b]
for i = 1:6
    GObjects(i) = line(0:200,data_normal(:,i+3),'Color',colors(i,:),'UserData',i); 
    GObjects(i+6) = line(200:400,data_down(:,i+3),'Color',colors(i,:),'LineWidth',1,'LineStyle',':','UserData',i+6); 
    GObjects(i+12) = line(200:400,data_up(:,i+3),'Color',colors(i,:),'LineWidth',1,'UserData',i+12); 
    LL{i} = L{i};
    legend(LL{:})
end

[Tairan]

It doesn't work. The result is the same. The problem seems to relate to the construction order of lines.