Need help getting started with regexmatch

[aravindk100]

When I use regexmatch with text from a task I am able to match only when I use the full string as is but If I use any of the meta characters or quantifiers the result is empty. What am I doing wrong?

For e.g
I have a [] 2022
and if I use,
TASK
WHERE !completed
WHERE regexmatch(text,"2022") it finds

but if I do this,
TASK
WHERE !completed
WHERE regexmatch(text,"20.+")

the result is empty. This is the case even if I use simple \d or .w+ . I feel like I maybe doing a basic mistake but I cannot find it through docs. Any help would be helpful?
Eventually I want to read dates from this text field and see if the date is in past but I am stuck on step1.

[aravindk100]

I just realized after watching this video at 6:40 mark that regex should be on the left and text should be on the right.

When I did the following it worked,
TASK
WHERE regexmatch("\d{3}.+",text)