How to reset token value on input change with a list of values from search results

[notricky]

I have a dashboard.

There are several inputs. One of them is a DateTime picker.

I wish on the open as well as on choosing a new date range to fill a token value (that is a token from drilldown) with a set of values (for example - a comma separated) which I would like to retrieve from a separate query. I mean a query is not binded to any of the dashboards or the base query.

This could be something like this:

<form>
  <fieldset submitButton="false">
    <input type="time" token="dateFilter">
      <label>By time</label>
      <default>
        <earliest>-7d@w0</earliest>
        <latest>@w0</latest>
      </default>
      <change>
        <set token="filial">
          <query>
            <search>
              index=fed-trash source=spok 
              |stats values(FILIAL_ID)
              |eval f = mvjoin(FILIAL_ID, ",")
            </search>
          </query>
        </set>
      </change>
    </input>
  </fieldset>

This is wrong ofcourse, but I hope this explains what I want.
Actually I want the produced result from a query above:

FILIAL_ID

1111

2222

3333

would be transformed to a string

1111,2222,3333

and be paste as if I set a token by this:

<change>
   <set token="filial">1111,2222,3333</set>
</change>

as I use token $filial$ further in my dashboad query at WHERE-clause like this

index=... source=...
|where FILIAL_ID IN ($filial$)
...