CaptionML property for RTC

HI everyone,

I have following problem using CaptionML property:

In NAV Classic, I add a value (e.g. CHS= XXX) in CaptionML of a field in SO-form. After i execute the code>>>>>> GLOBALLANGUAGE := Language.GetLanguageID(‘CHS’); //where ‘Language’ is a record type var to the table 8. and reopen the form then It works , (i.e. show XXX in the field name).

However, when i do the same thing in SO-page ,and reopen nav RTC. It does not work…Can anyone help?
Please advise and thanks for your attention!