How can i add a second Modification Date Text Variable?

[cbishop01]

I'm trying to add a second Variable to make the date M/yy.  I have something like it below but when i Click on Define Text Variable to double check it it is a Custom Text and not Modification Date.  My main fear is that it will not automatically update the Date.  If this will Keep updating the Date let me know and i'll just leave it as is.  Also if there is a cleaner way to do let me know.  Thank you.

      tvLn = doc.textVariables.item("L#"); 
      !tvLn.isValid && tvLn = doc.textVariables.add({name:"L#", variableType:VariableTypes.CUSTOM_TEXT_TYPE});    
      tvLn.variableOptions.contents = String( getDateString() );
 var R1, R2;       
      myTableMOD.columns[0].contents = columnOneContentsArray;        
      myTableMOD.columns[1].contents = columnTwoContentsArray;        
      R1 = cell5OfColumn2insertionPoint1.textVariableInstances.add(LocationOptions.AFTER, cell5OfColumn2insertionPoint1); 
      R1.associatedTextVariable = doc.textVariables.itemByName("getDateString");
  var cell5OfColumn2insertionPoint1 = myTableMOD.columns[1].cells[1].insertionPoints[0];      
        }        
           function getDateString() {  
 var date = new Date();  
 var month = ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12"];  
    // Handle zero prefix  
 var formatDate = ("/" + date.getFullYear()).substr(-2);  
    return month[date.getMonth()] +"/" + formatDate;  
    }  

[Trevor:]

This might help

Add highly customized Text Variables to InDesign | Ozalto

[cbishop01 · Accepted solution]

This just might work if i can edit it correctly.  Thank you.  I'll mark correct if i get it to work.