how to put a bar above a letter in MATLAB equation?

I want to write letter x with bar above it but when I write $\bar{x}$ it is not working in MATLAB online. Please I need your help

Answer 1

[Star Strider]

You have to specify 'Interpreter','latex' as well.

text(0.5,0.5,'$\bar{x}$', 'Interpreter','latex', 'FontSize',20)

.