Overriding SASS variable in variables.scss file not working

Ionic Framework ionic-v3
#1

Hi,
this is my variables.scss file content:

$font-path: “…/assets/fonts”;

@import “ionic.globals”;
$colors: (
primary: #2A2C43,
secondary: #677077,
lightprimary: #B5B5B7,
light: #f4f4f4,
dark: #222,
energy: #f2b632,
glifoPrimary: #1A88A4,
glifoSecondary: #185772,
glifoFabButton: #FF7B12
);
$toolbar-background: color($colors, primary);
$menu-width: 100px;
@import “ionic.theme.default”;

@import “ionic.ionicons”;

@import “roboto”;
@import “noto-sans”;

I just want to need change menu’s width, but this way not working, not override the ionic sass variable. Can somebody help me, please?

Thank you