can not get component context for customModal

[we125182]

• http://plnkr.co/edit/ZAZqZu?p=preview

when i exercise the example in my project. i can't get the context(the number 2, 3) in customModal.

this is my code:

// app.module.ts
imports: [
...
    ModalModule.forRoot(),
    BootstrapModalModule,
...
]
...
// tables.module.ts
imports: [
   ...
    BootstrapModalModule,
...
]

// the component code is same as the plnkrDemo.

environment:

• Angular version: 4.1.3
• angular2-modal version: 3.0.1
• Browser: Chrome

thanks for anyone's help.