Can I appeal when new evidence is discovered

my father took an offcie on lease ON 1993 but after he gone the owner of the office falsly claim possessin on the ground of "Non Use" which is false ,we are using office thorughout the years & to prove this wepresent envelops of post at our office adress, but there was no evidence can be found by us for the year of 2006 with other evidences but recently by chance we found DOCUMENTAL evidence of year of 2006 but small cause court reject evidence with reason that there is no "good cause" is given for the late admisn of evidence so now i need format of the appeal for admission of evidence