i wan t to create schema validation, with dynamic params use vee-validate in vue js. but the issue is my methods and computed property be undefined in the schema. here is my code. `

export defaults {
 data() {
  const self = this;
  return {
    fixedSchema: {
        fixed: `required|min_value:0|max_value:${self.subTotal()}`,
      }
  }
},
methods: {
 subTotal() {
   return 56;
 }

}
}

the idea is to create validation schema with dynamic property.