Is the command "Th(x,y,z).region" available for surface meshes?

I have a surface mesh, generated with GMSH, on which I have defined different regions/physical surfaces. What I would like to do is to get a point’s region’s tag. I tried Th(x,y,z).region and Th(x,y,z).label but both don’t seem to be working for meshS.
Is there an alternative, or a different syntax that I don’t know of ?
Thank you.

Dear user,
the command Th(x,y,z).region has just been added on the branch develop.
Let me know if your problem is solved.

Thank you for your quick response.
I haven’t been able to run my code so far. I have tried compiling the source code from the branch develop myself, and might have done something wrong.
The command make check returned a failed test on “NSNewton.edp” and I don’t know if I should assume I installed FreeFem wrong or not?
The test-suite.log file doesn’t provide any information on the issue.