Strange problem using webutil "WEBUTIL_CLIENTINFO.GET_HOST_NAME"

Question

in a form in with a use (and work fine) some function of webutil (like client_get_file_name etc) i have try to use this function :
:B0.HOST_NAME := WEBUTIL_CLIENTINFO.GET_HOST_NAME;
where b0.host_name is a char filed of 256.
when i try to execute this forms dons not work this lasty function and appear this error :
wuc-015 your form must contain the following BEAN : getclient info ???
i don't understan why ??
in the same form all other function of webutil works fine, only this ??
a solution ???

Answer 1

I've got it
quotation from the Webutil install guide:
the Form has instantiated the WebUtil PJCs. This means that you cannot call WebUtil
functions before the Forms UI is rendered. This would include triggers such as PREFORM,
WHEN-NEW-FORM-INSTANCE and WHEN-NEW-BLOCK-INSTANCE for
the first block in the Form.
Likewise you cannot call functions after the UI has been destroyed for instance in POSTFORM.
If you do need to use WebUtil at Forms startup, it is recommended that you create a timer
with a short duration (say 1ms) in your When-New-Form-Instance trigger, then make the
WebUtil call in a When-Timer-Expired trigger.
Francois