Using \text{...} in LaTeX mathmode for labels in MATLAB figure

I use formula for labeling axes in Matlab figure. There should be some cyrillic symbols that in math mode interpreter can't write. I suppose problem can be in that as ones I use '$$ .. $$', it is mathmode, so it cannot turn into text mode internal this code like do it Latex.

xlabel('$$ \cdot 10^{9} \frac{\text{шар}}{\text{мл}} $$', 'Interpreter', 'Latex')

Answer 1

[Walter Roberson]

The Latex interpreter cannot handle any characters beyond U+00FF, regardless of text mode or math mode.

The Tex interpreter can handle unicode characters.