I need to translate RVActions but from code and without it appears no dialogue to the end user. That is to say, as if by defect the language was Spanish.
RVActions are already translated to Spanish.
To set the default language, place TRVAControlPanel on form and change Language property.
To apply language to actions, call RVA_LocalizeForm, see TForm3.Localize in the ActionTest demo.
You need to call RVA_LocalizeForm for form where TActionList with RichViewActions is placed. If this is a datamodule, call this function for this datamodule.