How to pass value to the request action url in el-upload?

<el-upload class="upload" action="http://127.0.0.1:5000/upload/email" :file-list="fileList" >

Here i have used element UI library and I need to pass email value to the 'action' url to end like base_url/upload/${email}. But this way doesn't work here in binding the value, because it takes the whole url as a string.

export default {
  name: "**",
  data() {
    return {
      base_url: "http://127.0.0.1:5000",
      email: email,
      fileList: []
    }
}

What needs to be done here for binding data to the action so that it does post request with the help of el-upload having base_url and email data?

Changing action to :action worked for me :) which will be like :-

<el-upload
 class="upload"
 :action="base_url+'/upload/'+email"
 :file-list="fileList"
>