New operators and class for jsonb with gin indexing

Hello all!

I am having problems applying gin indexing to my new operator class for
type jsonb.
I created an operator that can query(jsonb column) keys and dates where
dates are more than, less than, equal and not equal to the one provided
inside another jsonb.
Because I want to make it use index search and not sequential search, I
wanted to use gin indexing, but it says that i'm missing support functions.
Did anybody try to do something like this? I searched everywhere online,
and I didn't see an example of how they should look like. This is how i
created an operator class

CREATE OPERATOR CLASS custom_jsonb_dates_operators FOR TYPE jsonb
USING gin AS
OPERATOR 1 #>? (jsonb, jsonb),
OPERATOR 2 #<? (jsonb, jsonb),
OPERATOR 3 #=? (jsonb, jsonb),
OPERATOR 4 #!=? (jsonb, jsonb)
After this, when i created an index with this operator class, i got the
following error:

missing support function 2 for attribute 1 of index "idx_name"

I tried writing my own support functions, but none worked(after creating an
index, it just never returned any results.

Thanks,
Luka Zivkovic