Example: Setting Model Variables Using a Custom Process

[Wayne Duran]

Imagine that on the model, we have the following model variables:

• Month.Current Month
• Year.Current Year

Create a custom process script and under the pre() function, prompt the user for the values:

function pre() {
    //this function is called once before the processes is executed.
    //Use this to setup prompts.
    
    const monthNames = [
        'Jan',
        'Feb',
        'Mar',
        'Apr',
        'May',
        'Jun',
        'Jul',
        'Aug',
        'Sep',
        'Oct',
        'Nov',
        'Dec'
    ];
    const now = new Date(Date.now());
    const monthNow = monthNames[now.getMonth()]; // Default month
    const yearNow = now.getFullYear().toString(); // Default year
    script.prompt('Month.Current Month', 'currentMonth', monthNow);
    script.prompt('Year.Current Year', 'currentYear', yearNow);
    
    script.log('process pre-execution parameters parsed.');
}

Collect and set the values after:

function begin() {
    //this function is called once at the start of the process
    script.log('process execution started.');
    
    script.variableSet('Month.Current Month', currentMonth);
    script.variableSet('Year.Current Year', currentYear);
}

You can also find more examples on how to create Processes here.