How to return Int from an if-else block instead of anyVal in scala?

I am a newbie in Scala. I was trying to use a if-else block in scala to try and return a "Int".

My code looks something likie this:

val blockNumber = {
    if(x.getName equals ("NATIVE")) 0
    else {
       if(x.getName equals ("DATIVE")) 1
    }
}

I use this value blockNumber in the method setBlockNumber() and this where the problem occurs:

 new setBlockNumber(Option(blockNumber))

But everytime I try to do this the method gives an error saying :

type mismatch; found : AnyVal required: Int

Can somebody please point out my mistake and how can I rectiy it? Thankyou for your time in advance.