Is it good idea to expressed pineapple juice on a steak?

Pineapple juice on a steak

I just cut some pineapple and expressed some juice on a steak but I just thought of it suddenly so not much.

Do you think it is a good idea? which is better expressed it's juice before roast or after roast?

Is it good idea to expressed pineapple juice on a steak?
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