Menu Problem

Hello,
I have a two language website, and I have some problems with the menu.
I added an inner html link as a custom link on the menu, but since my site is bilingual, I’ll need a different link for each language.
I tried with the curly braces – { en }english link{ : } { fr }french link{ : } – but it isn’t working.
Do you have some other ideas ?
Thanks

https://ww.wp.xz.cn/plugins/wpglobus/