The "code" from Power Automate Desktop to demonstrate recursion when solving the factorial of a number. NOTE: you need to recreate the flow by pasting the code below in PAD. #DesktopFlowAsCode

compute_factorial

# if you're reading this code,  create a subflow named "compute_factorial" in PAd and paste this code.
SET result TO number
LABEL REPEAT_STEP
IF number = 1 THEN
    EXIT FUNCTION
ELSE
    SET result TO result * (number - 1)
    SET number TO number - 1
    GOTO REPEAT_STEP
END

Main

# copy this codes to the Main flow in PAD. you may need to create the "theInput" input variable
Text.ToNumber Text: theNumber Number=> number
CALL compute_factorial
Display.ShowMessage Title: $'''Result''' Message: $'''Factorial = %result%''' Icon: Display.Icon.Information Buttons: Display.Buttons.OK DefaultButton: Display.DefaultButton.Button1 IsTopMost: False ButtonPressed=> ButtonPressed