MATLAB: Euro symbol with Latex fontsize

latex euro symbol fontsizeMATLAB

Hi everyone,
I'm using the Latex fontsize package for plotting some graphs. When writing the labels i have a problem writing the euro symbol; the symbol altgr+E is not recognised and it looks like it doesn't accept the usual Tex syntax 
\text{\euro}
or 
\euro
Precisly i'm writing a label like this:
ylabel('NPV $[{\euro}]$','interpreter','Latex','fontsize',11);
or
ylabel('NPV $[{\€}]$','interpreter','Latex','fontsize',11);
It is strange because only few strings before i wrote:
xlabel('Temperatura $[^{\circ}C]$','interpreter','Latex','fontsize',11);
and i got no problems.
I've already tried looking at this but didn't solve https://it.mathworks.com/matlabcentral/answers/232589-how-to-add-latex-packages-for-the-latex-interpreter-how-to-print-the-euro-symbol-with-the-latex-in
Thanks in advance!
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