41The applicant also cites the judgments of the Court of Justice in Case 14/81Alpha Steel v Commission [1982] ECR 749, Case C-365/89Cargill [1991] ECR I-3045 and Case C-90/95 PDe Compte v Parliament [1997] ECR I-1999 in support of her argument that the letter of 30 April 1999 was a favourable administrative act which created a legitimate expectation on her part that she would be admitted to the written tests in the competition. In the absence of any appropriate measure on the Commission's part withdrawing that act within a reasonable time, the applicant's legitimate expectation continued for seven weeks, until she received the Commission's letter of 16 June 1999. In those circumstances, the applicant considers that she was entitled to rely on the apparent legality of the decision contained in the letter of 30 April 1999 and to claim that it should be upheld.