Substring modifier returns one less character

[JaimeLeon2]

Describe the bug New substring modifier returns incorrect number of characters

Steps To Reproduce Steps to reproduce the behavior:

1. Set a string value 'ABCDEFGH' to an output config
2. Add Substring modifier and select from 0 to 5
3. Display value in 7 segment display
4. Note the string displayed has 5 characters, not 6

Expected behavior The modifier default position says 0, so counting from 0 the modifier should return one more than the number of the end position.

Actual behavior The modifier returns one less than the expected number of characters.

Details

• MobiFlight Version: 10.0.2.2
• FlightSim: irrelevant
• AddOn: irrelevant

Additional context Maybe the dialog should say starting position: 0 and "Number of character: 5" Then the behavior would be consistent.
If I remember correctly, this is how the substring function was in the Fsuipc output config dialog.

[DocMoebiuz]

This was the old FSUIPC style