A method for extending an event structure including submitting a keyname and a corresponding value for the event structure and determining whether the keyname exists in a keys field array of the event structure. If the keyname does not exist in the keys field array, the method includes incrementing an index of the event structure, adding the keyname to a position in the keys field array based on the index and adding the corresponding value to a position in the values field array based on the index. If the keyname does exist in the keys field array, the method includes determining the position of a previously stored value in the values field array associated with the keyname and replacing the previously stored value in the values field array with the corresponding value.
