@ComponentInfo(name="CSVReader", category="Custom")
public class CSVReader implements java.io.Serializable {
  private static final long serialVersionUID=1L;

  // ---- add your code here -----

  public void plot(
  @ParamInfo(name="CSV File", style="load-dialog", options="") File input,
  @ParamInfo(name="Column", style="default", options="value=0") int col) {

    input.eachLine{l->
      l = l.trim();
      String[] numbers = l.split(";");

      String stringVal = numbers[col];
      double value = java.lang.Double.parseDouble(stringVal);

      // do something with the value
    }
  }
}