rowData for retrieving id from a row won't work

Hi, here's my code:
ListComponent.ts
```
settings = {
columns: {
id: {
title: 'ID'
},
username: {
title: 'Username'
},
firstName: {
title: 'firstName'
},
middleName: {
title: 'middleName'
},
lastName: {
title: 'lastName'
},
parent: {
title: 'parent'
},
balance: {
title: 'balance',
valuePrepareFunction: (cell,row) => 0, //Passed value for testing component functionalities
type: 'custom',
renderComponent: BalanceComponent
},
address: {
title: 'address'
},
comune: {
title: 'comune'
},
provincia: {
title: 'provincia'
},
cap: {
title: 'cap'
},
},
```

RenderComponent.ts
```
export class BalanceComponent implements OnInit {
@Input() rowData: any;
invoicesCounter: number

isPositive: boolean = false;

constructor(private authHttp: AuthHttpService) { }

ngOnInit() {
console.log(this.rowData);
this.authHttp.getBalance(this.rowData.id).subscribe(data => this.balance = data);
if(this.balance == 0){
this.isPositive = true;
}
}
}
```

Using
`@Input() value: number ` works perfectly