How can I specify a dynamic string variable as filename in the saveas command?

There have been lots of questions on very similar issues already, but I can't quite get hold onto my specific problem. Say I have a cell vector with some names of chemical compounds and I want to produce plots of some properties of each one of those compounds, which I do using a simple loop. Now I would like to access the name of the compound when I am calling the saveas command, so the figure I am saving has the name of the compound and I therefore can quickly find it. I am getting the error message of using an invalid filename. My code looks something like this:

for I=1:10
    x=propertyone(I,:);
    y=propertytwo(I,:);
    name=Names(I);
    plot(x,y);
    saveas(gcf,name,'jpeg')
end

I have no problem whatsoever naming the figures dynamically doing something like this:

for I=1:10
      x=propertyone(I,:);
      y=propertytwo(I,:);
      name=Names(I);
      plot(x,y);
      saveas(gcf,['file',num2str(I)],'jpeg')
end

But I would very much like to have the proper names of the compounds instead of just a number. The problem seems to arise from defining the name variable within the loop, but I cannot figure out a solution.

I would appreciate any suggestions regarding this (rather specific) problem.

Best, Alex

[Paolo]

I suspect Names is a cell array. Try changing

 name=Names(I);

to

 name=Names{I};

[Dennis]

If Names stores your names as a cell name=Names(i) will return a cell. Try

   name=Names{i}

[Alex W]

Perfect, thank you very much.