Oracle Forms

Hello,

The case:
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1- i have 1 content canvas called 'CAN_CONT' and tab canvas called 'CAN_TAB' with 2 tabs
2- i have a button on that 'CAN_CONT' canvas which have the following pl/sql.
3-i have also a stacked canvas called 'CAN_PASWORD'
4-The Problem:
i.when i press on that button the content canvas and the tab canvas should be disappeared as coded but it isn't it only shows the stacked canvas
ii. if i pressed the button again it displays a blank canvas which seems to be a crashed form behaviour or what ever.
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HIDE_VIEW( 'CAN_CONTENT' );
HIDE_VIEW('CAN_TAB');
SHOW_VIEW('CAN_PASWORD');
GO_ITEM('NDB_PASWORD.STOCK_TAKING_PASWORD');

:PLN_STOCK_TAKING_HEADER.CHECK_FLAG := 1;


HIDE_VIEW('CAN_PASWORD');
SHOW_VIEW('CAN_CONTENT');
SHOW_VIEW('CAN_TAB');

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Help is needed pls urgently if possible..

Thanks in advance,

Regards,

Abdetu..