MAC OS High Sierra 10.13.4 (17E202)
Same on Windows 10
The file could be both local or hosted on a FM Server
Impossible to open the file "filename" (this is the file name of the open file). The host is not available, or the file does not exist in that host (translation).
The code is (all backslashes are taken out):
theURL = "fmp://$/" & Get ( FileName ) & "?script=ScriptName¶m= ScriptParameter";
window.location = theURL ;
It works on FM 16, FM 15