How to set up custom logic for conditional tokens in views?

[kamal_jagga]

Hi,

I often face the issue that my data comes late, so I am developing a retro run dashboard. Now my searches have multiple sourcetypes joined together with different earliest and latest values.
Now I want to automate the process of evaluating the earliest and latest values depending on the date. So my tokens would be like:

earliest1=x(will enter manually from dashboard)
latest1=$earliest1$+5
earliest2=$earliest1$+2
latest2=$earliest1$+1

Now, I think this can be done. Found the following details in documentation.

Custom logic examples
You can use an eval expression in event handler elements. Here is an example.

. . . [conditional actions] . . .

You can also compute a token's value based on the result of an eval expression. Here is an example.
[eval expression]

But I am unable to implement it. My code is :

<panel>
  <title>Time Range Picker for Test Search</title>
  <input type="dropdown" token="early" searchWhenChanged="true">
    <label>Earliest Time</label>
    <choice value="-150d@d">150 Days</choice>
    <choice value="-200d@d">200 days</choice>
    <default value="-150d@d">150 Days</default>
 <eval token="late">[$early$-50]</eval>
  </input>   
 </panel>

or, something like :

  <eval x>[$early$-50]</eval>
  <eval token="late">[x-50]</eval>

x is just a variable.

Any advice is appreciated.

[kamal_jagga · Accepted solution]

I found a solution to this.
Put a textbox to get value of token

Search would look like.:
index=cricket latest= -7d@d-$token$d@d | head 1| table _time _raw

eg. you want to retro run by 7 days. Put value =7 in token
And search would translate to
index=cricket latest= -7d@d-7d@d | head 1| table _time _raw

i.e will run on data 7 days older data.