Welcome to the forums!
You've discovered an error! There should be no change.
I suppose you know which direct object pronoun is correct.
By the way, there's an 'Accents' drop-down menu just above where you type. Use it to insert all the special characters you need. Below are some examples where proper punctuation and spelling were needed in your post.
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¿Le has dicho a Roberto la verdad?
S
í, ya ...
No, no voy a dec
írsela.