Include the name of each category in x-axis in a Plot

Can anyone please help me on how to show the name of each category on a MATLAB plot. I know I can do it on a Bar chart but I need to use plot instead. I have tried to use categorical but when I changed their names, the graph was plotted wrongly. This what I have

if true
  % code
c = categorical({'M';'M+2S';'M+S';'M-2S';'M-S';'P10';'P50';'P90'});
Objective_Rank rand(1,8)
plot(c,Objective_Rank))
end

I found later I wanted to name the category with different name such as {'2M';'M+S';'M+2S';'M-2S';'M-S';'P10';'P50';'P90'} after I have changed the Objective_Rank's elements positions. Can anyone help please.

Answer 1

[Yaser Khojah]

if true
  % code
f(j) = figure;
  % Create axes
  axes1 = axes('Parent',f(j));
  hold(axes1,'on');
  plot(Objective_Rank(j,:))
  title(['Demand  ' num2str(Demand) ' MMSCFD - Reservoir Uncertaintiy with ' num2str(Percent(j)) '% STD (Log Normal)'])  
  box(axes1,'on');
  % Set the remaining axes properties
  set(axes1,'XTick',[1 2 3 4 5 6 7 8],'XTickLabel',...
      {'M-2S','P10','M-S','M','P50','M+S','P90','M+2S'});
end