app.languagesWithVendors.item("German: Reformed").hyphenationVendor="Proximity"; 

app.languagesWithVendors.item("German: Reformed").hyphenationVendor="0xAE700kInDihyphServiceNameKey"; 

// switchHyphenationVendor.js 
// 
var myLan = "German: Reformed"; // Sprache 
var myVendors = ["Proximity", "0xAE700kInDihyphServiceNameKey"]; // Hersteller des Silbentrennmoduls 
if (app.languagesWithVendors.item(myLan).hyphenationVendor==myVendors[0]){ 
	app.languagesWithVendors.item(myLan).hyphenationVendor=myVendors[1]; 
} 
else{ 
	app.languagesWithVendors.item(myLan).hyphenationVendor=myVendors[0]; 
} 
alert("Aktives Silbentrennmodul: \r (" + myLan + "): " + app.languagesWithVendors.item(myLan).hyphenationVendor); 

// switchHyphenationVendor.js  
//  
var myLan = "German: Swiss";  // Sprache  
alert("Aktives Silbentrennmodul: \r (" + myLan + "): " + app.languagesWithVendors.item(myLan).hyphenationVendor);  
 
var myVendors = ["Proximity", "Duden"];  // Hersteller des Silbentrennmoduls  
if (app.languagesWithVendors.item(myLan).hyphenationVendor==myVendors[1]) { 	 
		app.languagesWithVendors.item(myLan).hyphenationVendor=myVendors[0];  
}  
else { 	 
		app.languagesWithVendors.item(myLan).hyphenationVendor=myVendors[0];  
}  
alert("NEUES Silbentrennmodul: \r (" + myLan + "): " + app.languagesWithVendors.item(myLan).hyphenationVendor); 

var d = app.activeDocument; 
var err = new Array; 
var succ = new Array; 
 
for (var i = 0; i < d.languages.length; i++) 
{ 
    try 
    {    
        d.languages.item(i).hyphenationVendor = 'Proximity'; 
        succ.push( d.languages.item(i).name); 
    } 
    catch(e) 
    { 
        err.push( d.languages.item(i).name); 
    } 
} 
 
alert ('Proximity eingestellt für:\r' + succ .join('\r')); 
if (err.length > 0) 
    alert ('Kein Proximity gefunden für:\r' + err.join('\r')); 

var d = app.activeDocument;  
var err = new Array;  
var succ = new Array;  
  
for (var i = 0; i < d.languages.length; i++)  
{  
    try  
    {     
        d.languages.item(i).spellingVendor = 'Proximity';  
        succ.push( d.languages.item(i).name);  
    }  
    catch(e)  
    {  
        err.push( d.languages.item(i).name);  
    }  
}  
  
alert ('Proximity eingestellt für:\r' + succ .join('\r'));  
if (err.length > 0)  
    alert ('Kein Proximity gefunden für:\r' + err.join('\r'));