exit \fontname in label

Hello,

I wanted to use a custom font only for a part of a label inside an axis label. for this I followed the following workflow https://fr.mathworks.com/matlabcentral/answers/95987-how-can-i-use-different-fonts-within-one-axis-label-in-matlab-7-13-r2011b

using something like this:

xlabel('part 1 \fontname{Cambria Math} part2\rm part3')

to get the part 2 with cambira math font and the rest in the default font (lets say arial), this works fine. the issue i am getting is that when I change the label to for example to Calibri (from the gui or by using set(findall(gcf,'-property','FontName'),'FontName','Calibri') ) I will get a half result.

what I mean, I will get the part1 in calibri, the part2 in cambira math and part 3 will stay in cambira math eventhought that I add the '\rm' part. the behavior I am looking for would be that part1 and 3 will the two of them change to the one used in the set function (or in the GUI). is this possible?

thanks