Script for Indesign Tables (JavaScript)

I created a script for InDesign using JavaScript, but do not know about creating one last command to complete it:

myTable ();


function myTable(){
      app.selection[0].tables.everyItem().appliedTableStyle = "Tabela";

        var    
            mCols = app.activeDocument.textFrames[0].tables[0].columns[-1],
            mTarget = mCols.cells.everyItem().texts.everyItem().getElements(),
            len = mTarget.length;  
        while (len-->0)
            mTarget[len].tabStops.add({  
              alignment: TabStopAlignment.CHARACTER_ALIGN,
              alignmentCharacter: ",",
              position: mCols.width -10
            }); 
        alert("Script myTable");
}

This script gives me this resulting:

ButIneedthe"R $" also aligned someone could help me.