REGEX with JSONPATH transformation inside .things transformationPattern

People, I have a problem that drives me crazy - filtering and assigning data at the level of .things files does not work.
Software openhabian 3.4.1 on RPI4 4GB. I have REGEX and JSONPATH extensions installed.
I get messages from the D1mini device:

21:59:55.664 MQT: stat/K/Og/Ok/RESULT = {"Time":"2023-01-23T21:59:55","MCP230XX_INT":{"D1":0,"MS":4122}}
21:59:55.681 MQT: stat/K/Og/Ok/RESULT = {"Event":"Done"}
21:59:55.664 MQT: stat/K/Og/Ok/RESULT = {"Time":"2023-01-23T21:56:55","MCP230XX_INT":{"D10":1,"MS":4122}}
21:59:55.681 MQT: stat/K/Og/Ok/RESULT = {"Event":"Done"}
21:59:55.664 MQT: stat/K/Og/Ok/RESULT = {"Time":"2023-01-23T21:57:55","MCP230XX_INT":{"D12":0,"MS":4122}}
21:59:55.681 MQT: stat/K/Og/Ok/RESULT = {"Event":"Done"}

as you can see above both Time and MCP230XX_INT contents change.
I wrote some transformationPattern codes within .things file but none of the things return me the value I want

		Type string : sypPstate "Ok Ma st" [ 
	            	stateTopic="stat/K/Og/Ok/RESULT",		
                	transformationPattern="REGEX:(.*D15.*)∩JSONPATH:$.MCP230XX_INT.D15"
			]  //in this rule i would like if "MCP230XX_INT" contains D15 to assign to string the value of D15 (0 or 1)

		Type string : sypPmsC "Ok Ma ms" [ 
	            	stateTopic="stat/K/Og/Ok/RESULT",
                	transformationPattern="REGEX:(.*D15.*:0.*)∩JSONPATH:$.MCP230XX_INT.MS"
			]	 //here if "MCP230XX_INT" contains "D15":0 to assign to string the MS value

		Type datetime : sypPtimeC "Ok Ma cz" [ 
	            	stateTopic="stat/K/Og/Ok/RESULT",
                	transformationPattern="REGEX:(.*D15.*:1.*)∩JSONPATH:$.Time"
			] //here if "MCP230XX_INT" contains "D15":1 to assign a Time value to the string
String      D1BOkSypPstate   "Ok Ma st"    {channel="mqtt:topic:d1bOK:sypPstate"}
String      D1BOkSypPmsC     "Ok Ma ms"    {channel="mqtt:topic:d1bOK:sypPmsC"}
DateTime    D1BOkSypPtimeC   "Ok Ma cz"    {channel="mqtt:topic:d1bOK:sypPtimeC"}

Tell me if I wrote stupidity in transformationPattern or is it a matter of the new OH edition?

You don’t say it but I assume this is an MQTT Thing?

So what does it return?

Break it up. First see what the REGEX does by itself with a String channel. It should be blank when it doesn’t match and contain the whole message when it does match.

Your transformationPattern looks right. Check your .things file for semantic or syntactic errors.