Value not getting updated on click of Column Chart field Links

load(
  local!a,
  local!b,
  local!c,
  local!data: {
    {
      data: {
        10,
        20,
        30
      }
    },
    {
      data: {
        20,
        10,
        30
      }
    },
    {
      data: {
        40,
        10,
        15
      }
    }
  },
  local!label: {
    "Bar-1",
    "Bar-2",
    "Bar-3"
  },
  {
    a!columnChartField(
      label: "Multi-Category Chart",
      categories: {
        "Cat-1",
        "Cat-2",
        "Cat-3"
      },
      stacking: "NORMAL",
      series: {
        a!forEach(
          items: local!data,
          expression: a!chartSeries(
            label: local!label[fv!index],
            data: fv!item.data,
            links: a!forEach(
              items: local!data,
              expression: a!dynamicLink(
                saveInto: {
                  a!save(
                    local!a,
                    10
                  ),
                  a!save(
                    local!b,
                    20
                  ),
                  a!save(
                    local!c,
                    30
                  )
                }
              )
            )
          )
        )
      }
    ),
    a!textField(
      value: local!a
    )
  }
)

Yes, I have a!save in my code, but still not working.

Yes, I have a!save in my code, but still not working.

Please try the example I provided above (perhaps in a new interface editor) and see if it does what you were hoping for (since i'm a little unclear on what your desired outcome is) -- and see if it might help you figure out how to correctly implement your saves.