How can I set an Options for minimum crop width and height ?

[partha-uiu]

I am using Nuxt js. Now I want to set the default minimum crop height and width for the vue-cropper, how can I achieve it?
https://github.com/fengyuanchen/cropperjs#options

                            <VueCropper 
                                    v-show="selectedFile" 
                                    ref="cropper" 
                                    :src="selectedFile" 
                                    @minCropBoxWidth="50"
                                    @ready="setCropBoxData"
                                    alt="Source Image">
                             </VueCropper>
                          

Here option @minCropBoxWidth="50" is not working and @ready too . @Agontuk