Check box is not getting value in Angular shedular

[hasan]

I have applied custom form in Angular scheduler. I have used Checkbox on that form. 

Screen shot : https://prnt.sc/pu29ec

I used this code to render checkbox:

        <tr *ngFor="let a of packageList">

                                            <td colspan="2" >

                                                        <ejs-checkbox id="{{a.Value}}" name="{{a.Text}}" value="{{data[a.Text]}}"  label="{{a.Text}}" checked]="a.Text==data.Package"></ejs-checkbox>

                                            </td>

                                           

                                        </tr>

but when I checked  checkbox and submit the form it is not taking value. It should receive data.Package  = true

Sceen shot: https://prnt.sc/pu2ch5

Is there any mistake from my code? or please give me guide how to apply checkbox on shedular form.

Thank you 

Abul Hasan