I have a dependent dropdown that changes some props on v-file-input as some selections should only allow a single file input and a pdf only. I am struggling to get the file validation to show up despite the rules I am putting in place.

                <v-select
              v-model="uploadTypeModel"
              :items="cleanAllowableUploadTypes"
              item-title="name"
              label="File category uploading"
              :counter="300"
              class="mb-2 mt-5"
              variant="outlined"
              return-object
              :rules="objectRequiredRule"
            ></v-select>
            <v-file-input
                    v-model="filesToUploadModel"
                    :show-size="1000"
                    color="primary"
                    label="Supporting Documents"
                    placeholder="Select your supporting documents"
                    prepend-inner-icon="mdi-file"
                    prepend-icon=""
                    variant="outlined"
                    counter
                    comfortable
                    :multiple="uploadTypeModel != null && (uploadTypeModel.name == 'Revised Certification' || uploadTypeModel.name == 'Addendum') ? false : true"
                    :rules="uploadTypeModel != null && (uploadTypeModel.name == 'Revised Certification' || uploadTypeModel.name == 'Addendum') ? certificationOrAddendumRule : arrayRequiredRule"
                    :accept="uploadTypeModel != null && (uploadTypeModel.name == 'Revised Certification' || uploadTypeModel.name == 'Addendum') ? '.pdf' : ''"
                  >
                    <template v-slot:selection="{ fileNames }">
                      <template v-for="(fileName) in fileNames" :key="fileName">
                        <v-chip
                          class="me-2"
                          color="blue-accent-4"
                          size="small"
                          label
                        >
                          {{ fileName }}
                        </v-chip>
                      </template>
                    </template>
                  </v-file-input>

My script is as follows:

      const arrayRequiredRule = [  (value: string) => !!(value && value.length) || 'Required.']
  const certificationOrAddendumRule = [
      (v: any) => !!v || "File is required!",
      (v: any) => v.type == 'application/pdf' || "File must be a pdf!",
      (v: any) => v.isArray || "Only one document allowed for this type of upload!"]