ionic translation issue

[5hivams]

I want to use arabic translation and for that I am using @ngx-translate angular library and also implementing [language] option as mentioned in angular2-json-schema-form but it's not working:
Here is example:
<json-schema-form [form]="applicantForm" (onSubmit)="onSubmit($event)" [(model)]="Applicant" [language]="'ar'" >

Please advise, any help would be appreciated!