Created expression map file, not listed in Ex. Map

Hello,
Using the following script, I created an expression map file named HSO_Flute2 for HALion Sonic, and saved it with the extension HSO_Flute2.expressionmap in the folder:
C:\Users\carlo\AppData\Roaming\Steinberg\Dorico 5\ExpressionMaps
I opened Dorico 5 Professional, selected the Track Inspector, and selected Ex. map., but the saved file (HSO_Flute2) didn’t appear in the list.
Why?
Maybe I did something wrong?
Carlo - Italy

Here’s the script:

<?xml version="1.0" encoding="UTF-8"?> _creator Carlo - HALion Symphonic Orchestra _name HSO Flute 2 baseSwitches name Sustain actions type programChange value 74 defaultBaseSwitch Sustain midiChannel 2 volume 100