Ans

The TI-OS has a temporary variable called Ans, which holds the last answer that was stored in the calculator. ICE is capable of getting this value, which you can use in your program. Note that Ans should always be a number, otherwise you can get funky outputs. The fraction part will be truncated, so the end result is an integer, which you can use in ICE, like this:

Ans→G

If Ans was something like 13, now the ICE variable G holds 13 as well.