Subtract

[arg2, arg1] → [arg2 - arg1]

• Action Code: 0x0b
• Stack: 2 → 1
• SWF version: 4

Adobe documentation

ActionAdd

ActionSubtract subtracts two numbers and pushes the result back to the stack.

Field	Type	Comment
ActionSubtract	ACTIONRECORDHEADER	ActionCode = 0x0B

ActionSubtract does the following:

1. Pops value A off the stack.
2. Pops value B off the stack.
3. Converts A and B to floating-point; non-numeric values evaluate to 0.
4. Subtracts A from B.
5. Pushes the result, B-A, to the stack.