This example demonstrates how to use the CALL instruction in ProBuilder to access and utilize custom indicators within a trading strategy. The code snippet shows how to call a custom indicator that calculates two different types of moving averages based on provided parameters.

ave1, ave2 = CALL"myIndicator"[50,0,100,1](close)

The code snippet above is a practical application of calling a custom indicator in a trading strategy. Here’s a step-by-step explanation:

• Custom Indicator Definition: Assume there is a custom indicator named myIndicator which is designed to calculate two averages based on its parameters. The indicator would typically be defined elsewhere in your ProBuilder scripts.
• Parameters: The indicator myIndicator accepts four parameters. In this example, these parameters are set to calculate two types of averages:
  • p1 and t1 are set to 50 and 0 respectively, which might represent a 50-period simple moving average.
  • p2 and t2 are set to 100 and 1 respectively, which might represent a 100-period exponential moving average.
• Calling the Indicator: The CALL instruction is used to execute the indicator with specific parameters. The syntax CALL"myIndicator"[50,0,100,1](close) indicates that the indicator is called with the parameters 50, 0, 100, and 1, and it uses the close price data.
• Storing Results: The results returned by the indicator are stored in the variables ave1 and ave2. These variables receive the calculated averages from the custom indicator, which can then be used in further analysis or conditions within the strategy.

This example illustrates the flexibility of ProBuilder in creating modular, reusable components such as indicators, which can be dynamically called with different parameters in various trading strategies.