Halion6 map to key in sample name does not work

Hi.

I just found this video and try to replicate the feature to map samples according to key names in text.

https://www.youtube.com/watch?v=0DxrZNjTryU&t=661s

I have samples named sample-C2.wav sample-G2.wav sample-B2.wav and so on. If I do as in this video all my samples get put on C2 and Nothing else. What have I done strange? Is there a setting to override the mapping?