How can we store data in storage using Capacitor JS with Angular?

I read this documentation, which is capacitor JS provided

This is my code for storing the data in capacitor js.

`/*

• this function is used for the set Value */ async setUser(data: any) { await Preferences.set({ key: 'value', value: JSON.stringify(data) }); }

/*

• this function is used for the get-Value */ async getUser() { const user: any = await Preferences.get({ key: 'value' }); this.UsersDetails = user.value; }` This is working fine when my app is running in the background. When I trash my app in the background and call for getUser(). It's giving a null value. It's not work.

Can anyone suggest if I am missing anything, or is there any other way available to Store the data in Capacitor JS?