# Is there a way to use sage-boolean-values in Latex

Hey there,

im completely new to sage and so far i got along quite well, but i can't figure this one out. I want to create randomized mathproblems and i want latex to decide what to print depending on calculations in sage.

So here is a functional minimal example:

```
\documentclass{article}
\usepackage{sagetex}
\begin{document}
\begin{sagesilent}
a = ZZ.random_element(1,20)
b = ZZ.random_element(1,20)
\end{sagesilent}
$\sage{a}-\sage{b}$
\end{document}
```

What do i need to do if i want to switch a and b depending on if the result is negative or not?