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1) Let's just look at the left part: group round It's a familiar scheme. Nevertheless, I find it very difficult to explain. ===== 2) I have the basic data written in the application. I have specified: teams in the first "Group round" number of Group round dynamically created graph for KO system That's all. ===== 3) In the meantime, I've decided that it will be good if all nodes in the Group round will have CheckBoxes. At the level of 0 (Group) they have no role 1 check mark means the advancing team ===== 4) The user's task is to move the advancing team to the adjacent right tree. If this is OK, the user will confirm this. Based on that, I will generate the teams in groups for that round. Here we handle this with the WriteToDB function ===== 6) It is up to the user whether to have it generated: matches (including rematches) list of players in each match These two points are not the task of this solution. Nor is entering data for the matches part of this task. ===== 7) I need to create the conditions to be able to: ReadFromDB: populate individual trees - I don't see a problem here hide unnecessary Group round in the code to accurately identify the individual rounds. So that I can set properties for them. For example: hidden, inaccessible, active. I don't need to identify the teams HERE. Then trees are enough for me. At least that's what I think. Write the result using WriteToDB 8) I'm not dwelling on the DB structure and working with it right now. That will follow smoothly from the problem itself. It's beyond the scope of this problem. ===== 9) The challenge is to design for point 7) correctly: data structures classes and their functions/methods Only the names of the functions, which will explain their operation - are sufficient.

Your ChatGPT extension is working very very good. Thanks Igor.

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Just managed to do it in plain JavaScript! I navigate to the corresponding row using DOM, found the <a> tag and called click..... So easy!

Which part of this would apply to sample program in original post? Windows 8.1 is not listed as supported platform, but if Windows 7 is supported, then that should not be an issue. And if it works Windows 10 PE, then that makes it unlikely, that it uses something like AVX. Although, compiling it with all optimizations off would be something to try. Other thing would be to remove SysUtils usage... Just in case, that it is something in SysUtils initialization. As I understand, problem is not with IDE but with statically linked command line program, that only uses System and SysUtils units.

really I dont have tested a scenary like your, but RAD is dependent of some DLL/BPL in some scenary, then, as your MS8.1 is not complete yet.. it would can when using some function from System.SysUtils not? (just expeculation)

Android development is very different from Windows development. Most likely cause of problems are changes and requirements for newer Android OS that were introduced in the meantime. It has nothing to do with compiler nor Delphi language. Google releases new Android version every year and to comply with those new OS releases and ability to upload applications on Play Store, Delphi Android applications need to support new OS and new Android SDK. There have been numerous changes between 10.2.3 and D11.3 considering Android development and your old application most likely uses features that were subject to change and that require additional or changed configurations or code. Without knowing which features you are using, it is impossible to say what needs to be changed. You can find list of changes and new requirements between releases in official Android documentation https://developer.android.com/tools/releases/platforms Also Delphi Android application runs inside a wrapper and if application crashes due to misconfiguration inside that wrapper, it will crash before any Delphi code starts running. That is why you cannot debug it. To understand what is happening and why it crashed you need to look at native Android error logs - logcat.

I wrote the code without testing, just to give you the idea. Good that you solved the problem. Also instead of MainModule.builtins._input_prompt you can use BuiltinModule._input_prompt. And the following would do. No need to convert to AnsiString and back. procedure TForm1.PythonInputOutput1ReceiveUniData(Sender: TObject; var Data: string); begin InputQuery( 'Query from Python', BuiltinModule._input_prompt, Data); end;