ok so, with the errata, does it mean:
1. can i use my range if its higher?
2. does it give me range 4 if my range is lower?
3. can the range be perplexed if i have 0?

New wording:
Question answers: 1) This replaces the range. Whether your normal range is 0 or 12, this replaces it to 4. You can still Perplex on top of the replacement. I'm pretty sure this change happened because a range 0 piece, such as the Batman which comes pre-equipped with this, is affected by the Rule of 0 and cannot actually make said attack without a range replacement or minimum range.

I appreciate the effort, but you are wrong, sir. If I knew how to post links here, then I would. But, I can tell you, with 100% certainty, that what you posted is incorrect.

@Orgamous, I can see why you'd think that, but it doesn't "replace" the range, so you can't modify it. It is a specific criteria that allows you to make a special attack with a max range of 4.

It's telling you the range. That is a replacement. I don't see how there's any other way to interpret that. It's definitely not a maximum range. It would say a maximum range if that were the case. It's telling you what the range becomes for the attack. Can you provide any precedent for how this would not be a replacement?

It literally says "WITHIN 4 squares."

It does not say that anymore. I put up the new wording. It was done like that because, Rule of 0 having been a thing, you were not allowed to make a range attack at all unless you had a base range above 0. The old wording technically did not give range. This was fixed with the new wording, keeping it simple by just giving range.