Hello, Ajv—and welcome to English Forums. Thank you for registering as a member. Both of your sentences are fine.
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Ajv Thanks so much but not clearly satisfied.You'll find "the plan was changed" in:
AjvYesterday my friend corrected me when I used the second sentence which lead to an argumentYou and your friend have the advantage over us. You and he know exactly every detail of the context in which you said the sentence.