DM42 Programing: entering Local Label 00 - 99

[donaldhenry]

I am trying to program on my DM42. After several programming successes, i am frustrated about how to enter the simple line of code for local labels 00-99. On my DM42 the sequence of keys I use to enter the line is:
[PGM.FCN]
[LBL]
[SHIFT] [0] // no entry and a beep
[0] //
The response is
nn LBL ":_ // which isn't what I want

I can successfully add the line in Free42 (Windows):
[PGM.FCN]
[LBL]
[0]
[1]
Here the response is as expected:
nn LBL 01 //nn is program line number


What I am doing wrong in the DM42?

-Don