24The Court of First Instance first dealt with the plea alleging a manifest error in assessing the facts. In that regard, it held as follows:68 As regards [the applicant's] capacity as a founder member of Mon de l'Evasió, holding 16% of the shares, it does not constitute proof that he was engaged in a commercial activity. As the Bank acknowledged at the hearing, being a founder member is not the same as being an administrator and it is thus necessary to ascertain whether the applicant did in fact participate in the company's activities.69 As regards the reference to his connection with the Bank, it should be pointed out that, contrary to what is stated in the contested decision and argued by the defendant in its pleadings, it has not been established that the applicant appropriated documents belonging to the Bank or took advantage of his connection with the Bank in a manner contrary to the Staff Regulations of the Bank. Admittedly, in his letter sent by fax on 28 October 1996, Mr Ingargiola describes the applicant as the “person in charge of the computer section” of the Bank. However, Mr Ingargiola himself acknowledged in his statement to Interseco that on the only occasion on which they met the applicant had told him that he was “employed as a messenger at the Bank”. Mr Ingargiola also stated: “Mr Yasse made himself out to be someone important in the finance department, whereas I made an assumption about Mr Hautem's post. That is, his wife had said that her husband ‘did something with computers’.”70 As regards the use of the Bank's equipment for commercial purposes, the applicant merely collaborated with Mr Yasse in drafting the four documents found on Mr Yasse's computer. Contrary to what the Bank contends, that participation in such a use by Mr Yasse of his office computer cannot be characterised as systematic use for commercial purposes. Likewise, the mere fact that the applicant participated in creating those documents, even though it may be regarded as assisting in the exercise of a commercial activity, cannot be classified as engaging in a professional activity of a commercial nature within the meaning of Article 4 of the Staff Regulations of the Bank. Last, and contrary to what is stated in the contested decision, the applicant's conduct could not have given the impression that the Bank was involved in his activities. The documents in question were not sent to their recipients by the applicant and none of them bears his signature.71 As regards the inferences to be drawn from Mr Ingargiola's letter sent by fax on 28 October 1996, it should be observed that the applicant himself did indeed acknowledge that he had participated in the commercial transaction complained of by Mr Ingargiola: however, Mr Ingargiola informed Interseco that Mr Yasse and Mrs Hautem had presented themselves “as [the] owners of Mon de l'Evasió”, that they had a promotion project for a Skit-Ball stand and that they had bought one. He stated that lie had only met the applicant once and that on that occasion the applicant had said that “his wife dealt with matters in Mon de l'Evasió with Mr Yasse”. Mr Ingargiola also said that he had the impression that the applicant “had nothing to do with Mon de l'Evasió”. Consequently, the letter from Mr Ingargiola faxed on 28 October 1996 cannot constitute sufficient proof that the applicant had engaged in a professional activity of a commercial nature.72 As regards Mr Ingargiola's letter of 19 November 1996 withdrawing his complaint, it should be pointed out that, as far as the applicant is concerned, its content is confirmed by, and consistent with, the above-mentioned statements of Mr Ingargiola. Nor has the Bank adduced any evidence to the contrary.73 As regards the letter of 27 September 1996 attributed to the applicant,... even supposing that it was written and signed by Mrs Hautem, [it] does indeed confirm that the applicant participated in [the] commercial transaction [relating to the Skit-Ball stand]. However, it is not of such a kind as to establish that the applicant engaged in a professional activity of a commercial nature.74 It should further be pointed out that neither the documents attached to Mr Ingargiola's letter sent by fax on 28 October 1996, namely the letter of 6 September 1996 from Mr Yasse and cheque No 6555542, signed by Mr Yasse, nor the documents annexed by the Bank to its rejoinder, namely the faxes of 24 September and 2 October 1996, both signed by Mr Yasse, in any way establish that the applicant was engaged in commercial activities.75 It follows from all the foregoing that the evidence adduced by the Bank, considered as a whole, shows that the applicant, as he himself has acknowledged, occasionally assisted both his wife and Mr Yasse in the exercise of a commercial activity and that he participated in a commercial transaction — namely, the purchase of a Skit-Ball stand by Mon de l'Evasió. Owing to its occasional nature and its limited scope, however, that collaboration on the applicant's part cannot be classified as engagement in a professional activity of a commercial nature within the meaning of Article 4 of the Staff Regulations of the Bank. Likewise, it has not been proved that the applicant relied on his connection with the Bank, that he involved the Bank or that he personally used the Bank's equipment.76 It follows that the Bank made a manifest error in assessing the facts. Accordingly, the application must be upheld and the contested decision annulled, without there being any need to consider the complaint relating to the applicant's failure to declare his wife's activity within Mon de l'Evasió or the other pleas put forward in support of the present action for annulment.77 Since, pursuant to Article 41 of the Staff Regulations of the Bank, the Court has jurisdiction in disputes of any nature between the Bank and individual members of staff, it is necessary to apply, by analogy, the rule laid down in Article 91(1) of the Staff Regulations of Officials of the European Communities that the Court has unlimited jurisdiction in disputes of a financial character. The Bank must therefore be ordered to pay the applicant the arrears of remuneration which he should had received since his dismissal.’