XF 2.2 How to only show part of a string in custom thread fields with other part covered/blurred?

[gogo]

This is the original phrase {$value}:

Hello, I'm from USA.

Displayed as:


or,

Hello, I'm from XXX.

And the blurred part is non-clickable, not like spoiler.

Or, can we do regex for the output of custom fields?