How can i validate input number into a Field of type char in oracle form?

hi.....
can any one help me.....please...!!!?!!
How can i validate input number into a Field of type char in oracle form?

i have tried doing that, but still the field except numbersthere was an error in that code. it should have been
var_num:=to_number(var_char);however, it appears that you want the entry NOT to be a number. if this is the case then try
begin
if to_number(:block.item) = 0 then null; end if;
message('The entry cannot be numeric');
raise form_trigger_failure
exception
when value_error then
/* this is where you put the code you want to be run when the
entry is non-numeric */
end;

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MASTER     CHILDREN
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MASTER3    CHILD1 CHILD2 CHILD3I'll point your other thread to this one.

How can i validate input number into a Field of type char in oracle form?

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