Add new functions and in another language

[Vegaelce]

Hello,

When you create a new calculated item in Cognos Workspace Advanced, in the functions sheet, there is not all the functions available. For example, I don't see "if" or "case when" (cf Attachment).

Do you know if it is possible to add more functions in these propositions ?

Another question, do you know if it is possible to have these functions in another language? It seems that in Impromptu, the users who asked me this question, had the functions in french.

Thanks.