Hi Max,
I tried script below which works:
impFamos fname:= "c:\I_010_7-3.dat" Options.Names.FNameToSht:=1
Options.Names.FNameToShtFrom:=1
Options.Names.FNameToShtTo:=1;
Please also check this page for more details:
https://www.originlab.com/doc/X-Function/ref/Details-of-TreeNodes-in-Import-Famos
James