How to change owned license parameter

Here is PHP example how you can change some license parameter:
There are few restrictions here you must know:
- you can only read attribute of owned license with this call
- you can only read some predefined license attributes, currently: max_agents
- you can only read some attributes for some products as defined bellow
Check out answer format in full restApi specification.
How to change some parameter value?
Here is PHP example how to change max_agents parameter on some LiveAgent owned license.
Valid parameter definitions for specific products
- max_agents [numeric/greater than zero] - number of max. agents which can be used in application 
currently none