Token = "sl.B_msgdiPWezavqeIij7xO0CoH6lFDkcxzp9wOv6yyW7dixfCrQAW21oFDnvVjkfZa4UegdzdP0...";
    File  = "kJU6-a-pT48AAAAAAAAABw";

    Result = OPI_Dropbox.CancelFilePublication(Token, File);