title: Optional Parameters in VBscript
body: <p>I'm new to Vb-script and I have to create a function (keyword) which needs a big number of param but using Optional parameters is not allowed in Vb-script.</p>
  
  <p>I did some web research and I noticed that I can use argument array or objects dictionary. I want to know in which case it is preferred to use argument array and when I have to use Dictionary. Also, is it easy to add param to my function arguments in each case ?</p>