In [Shifting the +- voltage signs in circuitikz](https://tex.stackexchange.com/questions/304528/shifting-the-voltage-signs-in-circuitikz) answer, they used "/tikz/circuitikz/voltage/distance from node" to set the distance that the +/- signs are away from the component (or well, node), and when I use that exact code, it works as shown, but I can't figure out why my code it doesn't seem to work. Am I using ctikzset incorrectly?

```
\documentclass{standalone}
\usepackage[siunitx, american, RPvoltages]{circuitikz}

\begin{document}
\begin{circuitikz}
\ctikzset{/tikz/circuitikz/voltage/distance from node=0.3cm}
\draw
    (0,0) to [generic, v<=40<\volt>] (0,3);
\end{circuitikz}

\begin{circuitikz}
\ctikzset{/tikz/circuitikz/voltage/distance from node=1cm}
\draw
    (0,0) to [generic, v<=40<\volt>] (0,3);
\end{circuitikz}

\end{document}

```

[![Different distance from node, but same figure](https://i.stack.imgur.com/VheTp.jpg)](https://i.stack.imgur.com/VheTp.jpg)