if(to_number(:member_name)>0) then
message('Error ..! You have Enter String');
message('Error ..! You have Enter String');
RAISE Form_Trigger_Failure;
elsif(to_number(substr(:member_name,1,1))>0) then
message('Error ..! You have Enter String');
message('Error ..! You have Enter String');
RAISE Form_Trigger_Failure;
null;
end if;