Vue.js动态<style> +变量

i want to pass dynamic variable into style: it is possible ?? like that : i try this way but it didn't work :style=" {'width':${parseInt(100 * task.progress)}% ;}" this is my task.vue:

 <tr  v-for="task in tasks.data "  v-if=" task.projet_id == key "   :key="task.id">
       <td >{{ parseInt(100 * task.progress) }}% <div class="progress">
       <div class="progress-bar bg-success" role="progressbar" aria-valuenow="0" :style=" 
        {'width':`${parseInt(100 * task.progress)}`% ;}"  id="progress" 
       aria-valuemin="`${parseInt(100 * task.progress)}`" aria-valuemax="100"></div>
       </div>             
       </td>