note Enlil <i>Firstly I have a scalar that will contain either a value or a reference to an array. If it's an array I want it to do one thing. If it's a scalar value I want it to do another. What's the correct way of doing this so I don't get errors?</i><p> Have a look at [doc://ref] in the documentation. It has a couple of examples of what you are looking for. <p><i>Secondly How can a make a global variable truely global, so that it will be accessible by all packages without using package::variable.</i><p> You don't. Well sortof, [id://141331] <p>hth<br />-enlil 522851 522851