<human>: Can you summarize the given text in a few sentences?

So a little while back I was charged with possession of Marijuana in NY (it's decriminalized here).  The DA lowered the charge to "Disturbing the peace" and I was to pay a $200 fine (the possession ticket being about $280).  

The court date on which this was settled was Feb, 11.  I told the judge I'd pay on the 23rd.   

Today I got a letter in the mail from the court, it was a receipt of my payment of the $200 fine.  It says I payed in full even though I haven't.

My question is:  Is this receipt my "get out of jail free" card?  Do I still have to pay the fine?
<bot>: Had to pay a $200 fine, didn't, but got a receipt of my payment in the mail.