ZuluScript: Custom Columns in Pilot Logbook Setups
When creating a 
<a class="lnk1" href="/console/ZConsole.jsp?zconsm=FLTCSTSETUP">custom column setup</a>,
for each position you can specify either a predefined column (e.g. "Aircraft ID")
or use a script to create a custom column value, in which case you'll select "Script
Column" from the drop-down and enter your script on the right-hand side.
<div class="h10"> </div>

Before working through this column script, make sure you've read the examples
for custom currency definitions. The scripting is mostly the same,
but there is no initialization script (because there's no need to accumulate 
values between flights) and the predefined variable you'll use is called
<code>col_value</code> rather than <code>currency_ok</code>.
<div class="h20"> </div>

<b>Example: Conditional Column Value Based on Landings</b>
<div class="h10"> </div>

The following script will display one of three values:
<ul>
	<li><b>"Night Currency"</b> if three or more night full stop landings
		were performed on this flight; otherwise</li>
	<li><b>"Day Currency"</b> if three or more landings of any type 
		(full stop or touch/go) were performed on this flight; otherwise</li>
	<li>The column will be blank.</li>
</ul>

Script:

<pre>
  if (getfieldnum("Night Full Stop") >= 3) 
    col_value = "Night Currency";    
  else 
  {    
    var nn = getfieldnum("Day Full Stop") +
             getfieldnum("Night Full Stop") +
             getfieldnum("Day Touch/Go") +   
             getfieldnum("Night Touch/Go");  
    if (nn >= 3) 
      col_value = "Day Currency";
    else 
      col_value = " ";
  }
</pre>

<div>How it works:</div>
The script sets the predefined variable <code>col_value</code> to the
appropriate string for this column, based on the number and types of landings
performed.