vue UnwrapRefSimple<T> generics type can't assignable to T at reactive

I have created a hook function and want to reuse it in other places:

import { ref, Ref, reactive } from 'vue'

const useSelectAarray = <T>(items: T[]) => {
  const selectItem: Ref<T|null> = ref(null)
  const options = reactive([...items])
  const select = (key: string, value: any) => {
    const trigger = options.find((item: { [index: string]: any }) => item[key] === value)

    if (typeof trigger !== 'undefined') {
      selectItem.value = trigger
    }
  }

  return {  
    selectItem,
    select,
    items: options
  }
}

But at selectItem.value = trigger, I get an type error Type 'UnwrapRefSimple<T>' is not assignable to type 'T'。

How can I solve this problem?