The name of the images are not showing even if the images are upload

Here i am using vue-form generator for uploading an image. And while i am uploading image the images are uploading fine but the name of the image is not displaying at form field. So where I am going wrong please let me know

<div>
    <vue-form-g :schema="ImageUpload" :model="model" :options="formOptions"></vue-form-g>
</div>
ImageUpload": {
            fields: [{
                type: "image",
                inputType: "file",
                placeholder: "Upload file",
                required: true,
                files: true,
                model: "image_1",
                preview:true,
                styleClasses: ["half-width col-xs-12 col-sm-4", "image_1"],
                validator: VueFormGenerator.validators.text
            },
}