Finding variables in the "Prompt for User Input" entered values

Questions & Suggestions
1

I'm in a midst of making a macro, which makes a instant template for my jobs. Currently, I'm stuck on making the "Prompt for User Input", to identified a entered value, for example, "21881_BigSalesFlyers" into two different variables. The job number (21881) & name (BigSalesFlyers). Is it's possible?

2

There are various routes – one approach is to use JSON tokens with [1], [2] subscripts:

Split phrase.kmmacros (20.0 KB)

image
image1012×1324 109 KB

Code snippet creating JSON from JS action:

(() => {
    'use strict';

    const 
        kme = Application('Keyboard Maestro Engine'),
        kmVar = k => kme.getvariable(k);

    return JSON.stringify(
        kmVar('somePhrase')
        .split(kmVar('someDelimiter'))
    );
})();