Traders usually draw support and resistance lines on the chart and when the price reaches these lines, they watch price action closely for breakout or reversal trade opportunities. When the price is trading away from these levels, they are not much involved in watching price action.
Line Alert auto trader triggers an alert when price touches any horizontal line drawn on the chart. Just attach the indicator to chart and wait. When any of these lines are touched, an alert window will pop up on the desktop and a sound is played.
To use Line Alert auto trader download it from Here, then place it at VertexFX VTL directory:
C:\Users\"Username"\AppData\Roaming\VertexFX Client Terminals\"Company name"\VTL10\Local VTL Scripts
Then right click on the tree and select refresh or restart your client station and you will find under VTL local scripts in your client terminal.
You can check this video that talks about the Line Alert auto trader: