Assuming you have sliced break in a phrase that is 128 (Sorry my bad not 127) lines. Reading what the wiki states, I would have a expected that each key on the DAW's piano roll would make a line from 0-127 (c-2 (0) through to G8 (127)). So in theory if you map where the slices are in the phrase to the piano roll, you should be able to trigger the phrase starting from any slice.
The problem is that even though the phrase is using the entire keyboard range, this is still not enough to reach every single slice/line in your phrase (108 notes vs. 128 lines).
So, you'll have to compromise by either creating a custom keyrange that allows triggering every second line, or by splitting the phrase in two.
I would probably go for the first option - this is usually OK if you don't need to trigger "offbeat" parts.
To make a custom keyrange assignment you first need to make sure you're using Keymap mode:
Phrase bank in Program mode. You want to click "Keymap"
Then you can assign the phrase to a specific range on the keyboard which aligns better with the number of lines in your phrase.
Do this by dragging the phrase onto the keyboard:
Note that this is just an example image - you want to assign to the range spanning from e.g. C-0 to E-5
This should make you able to reach every second line. And, since there's still room left you could add additional phrases to the layout.
Hope this helps!