Populate Value B based on Value A in Web UI

Hi Friends,
I have requirement to populate a field value based on other field value.
I have a view and it consist 2 context nodes.
When User enters the value in field A ( context node A ), we need to populate the field B ( Context node B ). But the main thing is that get property method of field B is triggering before then get property method of B.
Kindly suggest how do we achive this.
Regards,
Narendra Goyal

As mentioned before the DO_PREPARE_OUTPUT is a place that will work.
A little bit more on the background:
Do not code such stuff in the SET_ methods, as they will be called in the order of the data that is send to the server in the request. You noticed now that GET_A was called after GET_B, but it could change any time depending on the placement of fields on the view. Have a look at the DO_HANDLE_DATA for the FORM_FIELDS.
An approach I like to take for more time consuming operations on field change:
Create an event on context node CN1 and register the view controller to react on it. Then in the SET_A fire the event populating the new value as an input parameter.
Now the handler in the view controller can set a global variable containing the passed value.
In the DO_PREPARE_OUTPUT I can simply check if the global variable is set and directly work on it. Then clear it.
It is more work then the method described before, which is really fine and I have used it lots of times. The advantage is that you do less access for fetching the value from the context node every roundtrip.
cheers Carsten

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Moderator message - Asking for points is against the Forum's RoE
Message was edited by: Suhas Saha

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Hi Gowthami,
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Populate Value B based on Value A in Web UI

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