Bar Charts - Bar charts value mapping

Greetings for all.

  1. Grafana 8.1.5 (Edit on Win7)
  2. i’m trying to make a simple Bar Charts from query with 3 columns:
    1. Stamp (ID,Series)
    2. Sec (Seconds count)
    3. Tact Time (Same as Sec but converted as nvarchar hh:mm:ss)

So idea is simple (at least in SSRS) Need to show Bars based on Sec value BUT in Top of bar i want to see Tact Time instead of Sec.

I’ve try with transformation, overrides and value mapping but still dont get it… Google as SOF cant help me yet.

Get what i need without Pre-convertation and using Standart Options