API not working outside an @click action

[MCPWebdesign]

Hy,
this.$refs.slider.glide.pause(); seems working only on click action. I've tried to use it in method function, for exemple :
if (this.active >= 4) {
console.log('PAUSE')
this.$refs.slider.glide.pause();
}
It does nothing without errors, except the console log.
Our glide is configured with autoplay.
Is there another calling API functions ?
Could you help ? Thanks