In the VSA methodology, price bars with ultra-high volume have a very important role, these bars are called "trigger bars". The high, low, and close prices of the trigger bar show very strong levels of support and resistance (trigger numbers). In many cases, markets respect those levels.

Let's take the example image above. The price is chopping around and finally breaks out in one direction, to the upside. Then the price returns to the trigger number (close price), and, after a successful test, it continues the up move past the high of the bar.

Trigger Numbers are implemented in the full version of Smart Center Pro only and greatly help to filter potential trade alerts. This feature is not enabled by default, you will need to enable it manually in the Smart Center settings.

  1. Open VSA Smart Center.
  2. Right-click in the Smart Center window.
  3. Choose Settings.
  4. Select the Trigger Parameters tab.
  5. Check the box labeled "Use Trigger Numbers".
  6. Click the Save and Exit button to apply these new settings.

How the Trigger Numbers are factored into VSA Smart Center.