Conversation so far:
What happened in 1983?
After receiving offers from A.S.
Roma and A.C.
Milan, moving to Italy seemed right and a four-million dollar proposal from Udinese was on the table.
What did he perform at Udinese?
bigger clubs pressure the FIGC (Italian Football Federation) that blocked the transfer expecting financial guarantees.
Did the transfer ever go through?
At the end of the controversy, the deal went through and though leaving Flamengo fans in sadness, Zico made the Friulians fans finally dream of better days.
Did he win on his new team?
only gathered 32 points and was ninth in the final standing, losing three places in comparison to 1982-83.
What else happened in this time?
His personal top scoring dispute against Juventus's Michel Platini was exciting - Zico scored 19 goals.
Why was this disputed?
having played 4 fewer matches than the French footballer due to an injury.
Was there any other controversy?
He also used to complain about the board's lack of ambition for not signing competitive players.
How did the board respond to this?
Italian tax officials pressed charges against him for tax evasion.

Question: When were the charges filed?
Self-contained rewrite: When were the charges against  Zico for tax evasion filed?