How to Get and Set KM Variables from JXA?

Questions & Suggestions
5

I seem to be on a roll of answering my own questions. I hope you guys find this helpful.

After a lot of searching, coding, & testing, I put together these two functions, adapted from some earlier code published by @ComplexPoint:

  1. setKMVar(pstrName, pstrValue)
  • Sets the value of the KM variable, and creates it if needed
    • Notification made if variable is created.
  1. getKMVar(pstrName)
    • GETs the value of the KM variable
    • Shows error alert if variable is not found

Please post if you see any bugs or issues, or have suggestions for improvement.
I have done some testing, but they need more.
I can say that at no time did either of these functions cause Script Editor to hang.

//	--- STUB TO TEST FUNCTIONS ---

setKMVar("ASName", "Name Set from JXA") // check your KM Prefs > Variables to confirm
console.log( getKMVar("BrowserTitle"))


//=====================================================================	
function setKMVar(pstrName, pstrValue) {
//=====================================================================	

	var app = Application.currentApplication()
	app.includeStandardAdditions = true

	var appKM = Application("Keyboard Maestro Engine")
		
	var oVars = appKM.variables
		
	try {
		oVars[pstrName].name();
		
	} catch (e) {
		appKM.variables.push(appKM.Variable({'name': pstrName	}));
		
		app.displayNotification(
			pstrName, 
			{
				withTitle: "Set KM Variable",
				subtitle:  "Variable was Created",
				soundName: "Basso"
		  });

		}	// END try/catch
		
		oVars[pstrName].value = pstrValue
		
		return
		
}	// END function setKMVar
//–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

//=====================================================================	
function getKMVar(pstrName) {
//=====================================================================	

	var app = Application.currentApplication()
	app.includeStandardAdditions = true

	var appKM = Application("Keyboard Maestro Engine")
		
	var oVars = appKM.variables
		
	try {
		var strValue = oVars[pstrName].value();
		
	} catch (e) {
		
		strValue = undefined
		
		app.beep()
		var oAns = app.displayAlert('KM Variable does NOT exist', {
				message: 'Var Name: ' + pstrName,
				as: 'critical'
			})

		}	// END try/catch
				
		return strValue
		
}	// END function getKMVar
//–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

//============================ END OF FUNCTIONS ====================