10g form tree use of sys variable SYSTEM.TRIGGER_NODE issues

Question

I have a tree that I have put on a search box to navigate the tree and select nodes on the tree based on the search string.
The problem is that if they use the search box :SYSTEM.TRIGGER_NODE is not populated.
I use a search on the tree and then
ftree.set_tree_selection(tree_item, find_node, ftree.SELECT_ON); to select the item but how do I get this to set the trigger node variable?
If I mouse click nodes its populated correctly but not if I use the above
I use system.trigger node in various places to get current node to add/remove things to tree so ideally want to use this - as i thought this was always populated when the node was selected.
Thanks in advance

Answer 1

Quoting the online documentation for the WHEN-TREE-NODE-SELECTED Trigger:
SYSTEM.TRIGGER_NODE is the node the user clicked on. SYSTEM.TRIGGER_NODE returns a value of type NODE.
No programmatic action will cause the When-Tree-Node-Selected trigger to fire. Only end-user action will generate an event.So your programmatic setting of the trigger node does not cause the trigger to fire, so :system.trigger_node is not populated. But the value what you think :system.trigger_node should be in your case would be find_node , isn't it?
cheers