How do I use 'on return value' in function?

Hello all,

Can anyone give me an example on how the 'on return value' can be used usefully?. I mean I generally use functions to just call events with different parameters. I've never used the 'call expression' or 'on return value' . So how can I make use of these?

Call expression is only useful if you have enough parameter that the classic call function cannot keep up with them (I know at a high number of parameters, the window just cannot go larger, even though in most cases it is just not needed).

When you set a return value, it will basically be the value used when you are using Function.Call in an expression, for exemple, lets imagine..

Global variable Number = 3

On function "double", return value: 2*function.param(0)

On start of layout:

Set Number to Function.Call("double", Number)

Number will be equal to 6 after the layout starts once.