1. A computer implemented method, implemented in a computer device, of executing a function execution request, comprising the steps of: receiving the function execution request which is sent by a user of a user terminal, the function execution request including a set of functions to be executed and a sorting criterion for sorting the set of functions; identifying, from the function execution request received from the user terminal, said set of functions included in the received function execution request to be executed on the computer device; reading the sorting criterion included in the received function execution request sent by the user of the user terminal; sorting the identified set of functions included in the function execution request sent by the user of the user terminal using the read sorting criterion included in the function execution request; and executing the identified set of functions sorted in the sorting step based on a sorted order obtained in the sorting step, wherein, if only a sub-set of functions of the set of functions are permuted with each other or if some functions of the set of functions are permuted with each other only when they apply to different objects in a server station, the sorting step applies a method of sorting by permutation.