I already reported a bug
But the issue is with the list control itself.
The user function receives value of the INDEX of the list. And we cannot access the Message Value because the user function is called before setting the value internally.
See the following example:
index - Label - MidiValue
0 - Option A - 0
1 - Option B - 10
2 - Option C - 20
Default Value: 0
I turn the pot slowly to the right:
10959888 lua: ValueFromMessage: 0 Value from function:0.0 10962298 lua: ValueFromMessage: 0 Value from function:1.0 10964898 lua: ValueFromMessage: 10 Value from function:2.0 10967098 lua: ValueFromMessage: 20 Value from function:2.0
You can see it returns ValueFromMessage is the previous value. So we have no way to access those values from a LUA script.
If Im doing something wrong, please let me know!