Guilin Sun
Ansys Employee
Hi, This is a special feature for MODE product: it means thatthe override mesh size changes the multiplier times from the original mesh .When the "mesh multiplier" is larger than 1,the mesh is finer; when it is smaller than 1, it is coarser.
set("set mesh multiplier",true); to enable this feature
set("z mesh multiplier",4); to assign value
I tested both R1.3 and R1.4 in FDE and both work. here is the test for the same file you mentioned:
Please check the error message and make some modifications after some diagnoses.
You can enable anther feature (by default) to directly assign the override mesh:

The script is similar. Please try.
Or you may need to update the version. or please tell us what is your computer OS version.