Switching between English and Ukrainian

Hi everybody

I have to make a Project in English/Ukrainian and I don't know how it work.
In the Text Library I add the Ukrainian language andI select a cyrillic font for it. Inthe Graphic DesignerI've made two button to switch between this two languages and on a graphic I display a tag TextReference in an IOfield. This IOfield display correctly my english text but my Ukrainian text don't work, the text is display with the english font. Is there something special to do or a special software to install?

Thanks for your help