Text to Speech: Lexicons not working

Hello experts. 

I'm having difficulties getting a lexicon to work within Speech Studio → Audio Content Creation.

It's for a text in Turkish , and I want the word "rules" to be pronounced in English, rather than in Turkish. I set up a lexicon and loaded it in the right-hand panel, but the Turkish voice still doesn't pronounce the <alias> that I added to the lexicon.

I waited for 30 minutes (rather than the recommended 15 minutes) and the word "rules" is still not being pronounced according the <alias>.

Any ideas why this is happening? 

This is the text of the lexicon: