How recalc buffered value in calculated attribute?

Hi everyone
I have created some calculated context attribute and set the Buffer Mode to Buffered. As I understand this means that the value of attribute will calculated once, will buffered in memory and next will recalc "on demand".
My question is - how can I invalidate the attribute value and call recalc function ?
P.S. NW CE 7.2

Hi,
You can find out more details of [Calculated Context Attribute|http://help.sap.com/saphelp_tm80/helpdata/de/7f/a0384162316532e10000000a1550b0/content.htm] and [Calculated Attributes in Web DynproJava|http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/e093a9d8-c00e-2b10-7dae-b72c3a8c5536]
Hope this helps!!
Regards
Vijay K

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