Ability to send calculator-codes for debugging purposes

[joeherwig]

As a User flying open-source aircraft wich are continously maintained (FBW) I'd like to have an easy option to try out the calculator-codes to see if they have the right effect, before I assign them to an input control, so that I can check the functionality without the need of having already an input selected.

Describe the solution you'd like An Multiline input-field like for the button assignments AND a simple "test" or "send command" button would help.

Describe alternatives you've considered Currently I need to define a "__Test command", select an Input (eg. Button press) and then I can check it out, which commands are the right ones. Tried it with the "Execute Calculator Code" Funktion in FSUIPC, but it's quite annoying, as it clears the calculator code form field after each send.

Additional context