How to achieve stacked bar graph with two 'y' values but same x axi

Hello!

I am trying to show the lower value which is hidden at he back while plotting a stacked bar graph to come in front.

I am reading values from excel sheet

arrival_rate = xlsread('Graph_data', 'Sheet2', 'H1:H6');
pe_a = xlsread('Graph_data', 'Sheet2', 'I1:I6');
pe_b = xlsread('Graph_data', 'Sheet2', 'J1:J6');
line = xlsread('Graph_data', 'Sheet2', 'K1:K6');

   x1 = 30:1:100;
   x2 = 30:1:100;
   y2 = interp1(arrival_rate,line,x2,'pchip') ;

hold on 

bar(arrival_rate,pe_a, .1 , 'stacked','DisplayName', 'Error in A') 

bar(arrival_rate,pe_b, .1 , 'stacked', 'DisplayName', 'Error in B ')

plot(x2,y2,'k.','HandleVisibility','off','LineWidth',1) 
plot(arrival_rate,line,'k*', 'HandleVisibility','off','LineWidth',1) 

hold off

   xlabel('\lambda (Clients/Hour) ')
   ylabel('Error (%)')
   legend show
   legend('Location','Northeast')
   set(gca,'XTick',(0:10:110))
   set(gca,'YTick',(0:5:50))

    set(gcf, 'PaperUnits', 'normalized')
    set(gcf, 'PaperOrientation', 'landscape') 
    set(gcf, 'PaperPosition', [0 0 1 1]) 

the above code is what I wrote and it gives me an image attached below.

Is there a way to bring the blue bar forward as it has the lower value for the case of x =80 and 100.