# 4453 Inherited Form Creation Can Cause a TypeError at Runtime

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When create a inherited form, have a typeError:

TypeError: ufrmcustomerdropdown_tfrmcustomerdropdown.$p.create1 is undefined

the form is inherited a base form, when call the function to create a form

function GetFrmCustomerDropDown: TFrmCustomerDropDown;
begin
if not Assigned(FrmCustomerDropDown) then
FrmCustomerDropDown := TFrmCustomerDropDown.Create(Application);
Result := FrmCustomerDropDown;
end;

generate such typeError, but make a simple test case can't reappear this.