why does getting started with F# has errors in the let xx morifiable example?

Question

From this page:

http://www.tryfsharp.org/Learn/getting-started#bindings-values

the example for let xxx modifiable produces an error in execution

let mutable modifiable = "original value"modifiable <- "new value"

stdin(3,26): error FS0374: Invalid expression on left of assignment

What's the syntax of the example really supposed to be?

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Drew Harrison Microwave Metrology Master Tech

Answer 1

Did you miss the newline?

let mutable modifiable = "original value"
modifiable <- "new value"

Answer 2

Mmmh, , as Paulo Santos wrote, you must go to newline. The problem is solved ?  

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Développeur F#