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    <p>I should recommend you to populate your lists from e.g. When-new-Form-Instance. As usual you will get a good idea what you need to do from Forms help (menu 'Help/Online Help'). This is a procedure I have made to simple populate list only by specifying the name of the list item and the select statement to populate the lsit item with.</p> <pre><code>PROCEDURE populate_list_item ( p_item_name VARCHAR2 , p_select VARCHAR2 ) IS l_rg_id RECORDGROUP; l_list_id ITEM; l_err_num PLS_INTEGER; FUNCTION create_temp_group ( p_select VARCHAR2 ) RETURN RECORDGROUP IS l_rg_id RECORDGROUP; l_group_name VARCHAR2(30) := 'TMP$RG'; BEGIN l_rg_id := FIND_GROUP(l_group_name); --Make sure that record group don't alreay exist IF NOT ID_NULL(l_rg_id) THEN DELETE_GROUP(l_rg_id); END IF; --Populate the temporary record group l_rg_id := CREATE_GROUP_FROM_QUERY(l_group_name, p_select); RETURN l_rg_id; END create_temp_group; BEGIN l_rg_id := create_temp_group(p_select); l_err_num := Populate_Group(l_rg_id); --Allow for no data found in the selection query IF l_err_num NOT IN (0, 1403) THEN RAISE Form_Trigger_Failure; END IF; l_list_id := Find_Item(p_item_name); IF ID_NULL(l_list_id) THEN RAISE Form_Trigger_Failure; END IF; Populate_List(l_list_id, l_rg_id); Delete_Group(l_rg_id); END populate_list_item; </code></pre> <p>The When-New-Form-Instance is a form level trigger and should be under the form (instead of block or item):</p> <p><img src="https://i.stack.imgur.com/QSbpb.jpg" alt="Adding of When-New-Form-Instance"></p>
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    1. COWhen-new-Form-Instance, where I can found this trigger, when i click on list here can't found only when-list-chenge or somthing like this.
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    2. COWhen-New-Form-Instance is an form level trigger and can therefore be found directly under Form module name.
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