Issue

If you configured a message to show when a node in a tree control is clicked, you may see the rule execute multiple times:

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Symptoms

Your rule may be configured as follows within your Tree control when the issue occurs.

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The issue will occur when you click on the Parent or Child nodes.

Resolution

The developers have confirmed that this is an issue with the product, and they have provided a workaround for the issue.

On the Tree Control property, set the Load Ahead Level property to 2:

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Configure an advanced condition on the Tree is Changed Event, that checks whether the selected value is empty or not, only showing the message box, if it’s not empty:

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The result of this is that only one message box is displayed when selecting items.