[serman]

i think it should work ..
not tested ..
format(string, sizeof(string), "Family %d \n Name %s \n Leader %s \n Members %d.",number,FamilyInfo[i][FamilyName],FamilyInfo[i][FamilyLeader],FamilyInfo[i][FamilyMembers]);

ShowPlayerDialog(playerid,1,DIALOG_STYLE_LIST,"You rText",string,"ok","");