And here a few threads about it.
[url] forums.limesurvey.org/forum/german-forum...on-limesurvey#223552 [/url]

[url] forums.limesurvey.org/forum/can-i-do-thi...inverse-items#231051 [/url]

[url] forums.limesurvey.org/forum/german-forum...-float-vs-int#231953 [/url]

Joffm

P.S. A few are in German, but you seem to speak German.
Dann kannst Du solche Fragen auch im deutschen Teil stellen.