How to wildcard port number for AllowlistUrlPattern in mms.cfg

Hi,

My organization has a small but mission critical application that still uses flash and due to numerous issues including Pandemic, we couldn't migrate to newer technologies.

We're still striving to get flash working beyond EOL and for this we're referred to the Enterprise Enablement section in Admin guide.

With the help of it, we've been able to whitelist a pair of flash player and browser.
However, we're unable to whitelist another webpage which has port numbers.
Can anyone advise how can I make flash player read wildcard for portnumber in whitelist url pattern?
Our application Landing page has port number 7000 while content resides on other ports like 7600, 7700 etc

Is it possible to use wildcard for port numbers or to allow all ports in this domain/subdomain automatically?

AllowlistUrlPattern=https://www.example.com/ -- didnt work
AllowlistUrlPattern=https://www.example.com:*/ -- didnt work

Instead of coding as below, can anyone suggest a wildcard for ports?
AllowlistUrlPattern=https://www.example.com:7000/
AllowlistUrlPattern=https://www.example.com:7600/

Also, what is the use of AllowList Preview? Is it only useful for tracing, since I got my combination working without setting this parameter.

Thanks in advance!

Aditya