Awesome, that fixed the issue - modified class.staff.php around line 864
elseif (is_numeric($var)) {
/*** Modified to allow numeric staff - Nov 4 2020 /
/commit out return parent line/
#return parent::lookup(array('staff_id'=>$var))
/add the following/
$id = parent::lookup(array('staff_id'=>$var));
if (is_null($id))
return parent::lookup(array('username'=>$var));
else
return $id;
}
/end edit**/