Quantize audio

I want to quantize parts of a bass-line (in the audio-editor)to the nearest 16ths. I go to hitpoints in the sample-editor> edit hitpoints, beats: 1/16> Create slices. At this point the hole selection moves, as if by some offset, start and end of the event are moved…and everything ends up somewhere where it’s not meant to be at all. What am I doing wrong?

Is your song at the correct tempo or have a correct tempo map if not fixed tempo??