mfilename used in ".mlx" does not appear to be the desired path?

To get the full path and filename of the run in ".mlx", I used the mfilename function, but the full path of the file returned is not what I want.

How can I fix this please? Thanks in advance

p = mfilename('fullpath')

'/tmp/Editor_rdmrf/LiveEditorEvaluationHelperEliveEditorEB64F562'

But using it in the ".m" file is the result I want

[Walter Roberson]

mfilename cannot be made to work for this purpose due to the way that mlx are implemented.

There are posts showing how to get the mlx name. It is a bit of a nuisance.