It is the expression:
Code:
urlEncode$( "String Parser" )
This will return a string which is URL encoded and safe for transmission over the web. To use it, you need to first set the input string of the string parser. There are two ways to achieve this - firstly you can use the action "Set String". Following this you would then retrieve the urlEncode$ result using that expression.
Alternatively, and much of the time more usefully, you can use:
Code:
set$( "String Parser", "some string" )
This allows you to set the input string from inside an expression, so that you don't have to do it as a separate action. So for example you could set the URL of the GET object to:
Code:
set$( "String Parser", "http://www.yourdomain.com/somepage.php?text=This is some text with spaces to be encoded" ) + urlEncode$( "String Parser" )
That expression is called: Set String, Return "" and there is also one Set String, Return 0 (that's a zero character, not a letter 'o')