Calendar Devlopment

Hi team,

 New here to Appian and i am trying to develop a calendar to select Multiple dates and it is working fine my problem is the calendar shows the extra cards in DEC 2024 month. the cards are selectable. i want to know the reason where my code fails and need support in fixing this.

a!localVariables(
  local!holidayslist: todate(text("12/25/2024", "mm/dd/yyyy")),
  local!select: {},
  local!monthnames: {
    "JANUARY",
    "FEBRUARY",
    "MARCH",
    "APRIL",
    "MAY",
    "JUNE",
    "JULY",
    "AUGUST",
    "SEPTEMBER",
    "OCTOBER",
    "NOVEMBER",
    "DECEMBER"
  },
  local!month: month(today()),
  local!year: year(today()),
  local!week: {
    "SUN",
    "MON",
    "TUE",
    "WED",
    "THU",
    "FRI",
    "SAT"
  },
  local!blank: a!forEach(
    items: enumerate(
      weekday(date(local!year, local!month, 1)) - 1
    ),
    expression: " "
  ),
  local!dates: append(
    local!blank,
    enumerate(daysinmonth(local!month, local!year)) + 1
  ),
  local!selectedDate: {},
  local!holidays: {
    if(
      a!isNullOrEmpty(local!holidayslist),
      {},
      text(local!holidayslist, "DD")
    )
  },
  local!currentMonth: {
    a!forEach(
      items: local!selectedDate,
      expression: if(
        tointeger(text(fv!item, "MM")) = local!month,
        text(fv!item, "dd"),
        {}
      )
    )
  },
  {
    a!cardLayout(
      contents: {
        a!columnsLayout(
          columns: {
            a!columnLayout(
              contents: {
                a!richTextDisplayField(
                  labelPosition: "ABOVE",
                  value: a!richTextItem(
                    text: if(
                      a!isNullOrEmpty(local!select),
                      local!monthnames[local!month] & ", " & local!year,
                      local!select[count(local!select)] & " " & local!monthnames[local!month] & ", " & local!year
                    ),
                    color: "STANDARD",
                    size: "MEDIUM",
                    style: "STRONG"
                  ),
                  preventWrapping: true,
                  align: "CENTER",
                  marginAbove: "STANDARD"
                )
              },
              width: "NARROW"
            ),
            a!columnLayout(
              contents: {
                a!cardLayout(
                  contents: {
                    a!dropdownFieldByIndex(
                      label: "Month",
                      labelPosition: "ABOVE",
                      placeholder: "Select Month",
                      choiceLabels: { local!monthnames },
                      value: local!month,
                      saveInto: { local!month },
                      searchDisplay: "AUTO",
                      validations: {}
                    )
                  },
                  height: "AUTO",
                  style: "NONE",
                  marginBelow: "STANDARD",
                  showBorder: false,
                  showShadow: true
                )
              },
              width: "NARROW_PLUS"
            ),
            a!columnLayout(
              contents: {
                a!cardLayout(
                  contents: {
                    a!dropdownField(
                      label: "Year",
                      labelPosition: "ABOVE",
                      placeholder: "Select Year",
                      choiceLabels: enumerate(year(today()) + 10 - year(today())) + year(today()),
                      choiceValues: enumerate(year(today()) + 10 - year(today())) + year(today()),
                      value: local!year,
                      saveInto: {
                        local!year,
                        a!save(
                          local!blank,
                          a!forEach(
                            items: enumerate(weekday(1 / local!month / local!year, 1)),
                            expression: " "
                          )
                        ),
                        a!save(local!dates, null()),
                        a!save(
                          local!dates,
                          append(
                            local!blank,
                            enumerate(daysinmonth(local!month, local!year)) + 1
                          )
                        )
                      },
                      searchDisplay: "AUTO",
                      validations: {}
                    )
                  },
                  height: "AUTO",
                  style: "NONE",
                  marginBelow: "STANDARD",
                  showBorder: false,
                  showShadow: true
                )
              },
              width: "NARROW_PLUS"
            )
          },
          alignVertical: "MIDDLE"
        ),
        a!columnsLayout(
          columns: {
            a!forEach(
              items: enumerate(length(local!week)) + 1,
              expression: a!columnLayout(
                contents: a!cardLayout(
                  contents: a!richTextDisplayField(
                    labelPosition: "ABOVE",
                    value: {
                      if(
                        (fv!item = 1),
                        a!richTextItem(
                          text: index(local!week, fv!item, ""),
                          color: "NEGATIVE",
                          size: "STANDARD",
                          style: "STRONG"
                        ),
                        (
                          if(
                            (fv!item = 7),
                            a!richTextItem(
                              text: index(local!week, fv!item, ""),
                              color: "ACCENT",
                              size: "MEDIUM",
                              style: "STRONG"
                            ),
                            a!richTextItem(
                              text: index(local!week, fv!item, ""),
                              size: "MEDIUM",
                              style: "STRONG"
                            )
                          )
                        )
                      )
                    },
                    align: "CENTER"
                  ),
                  shape: "ROUNDED",
                  showShadow: true()
                )
              )
            )
          }
        ),
        a!forEach(
          items: enumerate(
            if(
              mod(length(local!dates), 7) = 0,
              quotient(length(local!dates), 7),
              sum(quotient(length(local!dates), 7) + 1)
            )
          ),
          expression: a!columnsLayout(
            columns: {
              a!forEach(
                items: (fv!item - 1) * 7 + enumerate(7) + 8,
                expression: a!columnLayout(
                  contents: a!cardLayout(
                    contents: if(
                      index(local!dates, fv!item, " ") = " ",
                      a!richTextDisplayField(
                        value: a!richTextItem(
                          text: index(local!dates, fv!item, ""),
                          size: "SMALL"
                        ),
                        align: "CENTER"
                      ),
                      a!richTextDisplayField(
                        value: a!richTextItem(
                          text: index(local!dates, fv!item, ""),
                          size: "SMALL"
                        ),
                        align: "CENTER"
                      )
                    ),
                    link: if(
                      and(index(local!dates, fv!item, " ") = " "),
                      null(),
                      if(
                        or(
                          contains(
                            tointeger(local!currentMonth),
                            tointeger(fv!item - count(local!blank))
                          ),
                          contains(
                            tointeger(local!holidays),
                            tointeger(fv!item) - count(local!blank)
                          )
                        ),
                        null,
                        a!dynamicLink(
                          saveInto: {
                            a!save(
                              local!select,
                              append(
                                local!select,
                                index(local!dates, fv!item, " ")
                              )
                            ),
                            a!save(
                              local!selectedDate,
                              append(
                                local!selectedDate,
                                text(
                                  concat(
                                    local!month,
                                    "/",
                                    local!select[count(local!select)],
                                    "/",
                                    local!year
                                  ),
                                  "MM/DD/YYYY"
                                )
                              )
                            ),
                           
                          }
                        )
                      )
                    ),
                    style: if(
                      and(
                        contains(
                          tointeger(local!currentMonth),
                          tointeger(fv!item) - count(local!blank)
                        ),
                        a!isNotNullOrEmpty(local!select)
                      ),
                      "ACCENT",
                      if(
                        and(
                          index(local!dates, fv!item, " ") = day(today()),
                          local!month = month(today()),
                          local!year = year(today())
                        ),
                        "SUCCESS",
                        if(
                          contains(
                            tointeger(local!holidays),
                            tointeger(fv!item) - count(local!blank)
                          ),
                          "WARN",
                          "NONE"
                        )
                      )
                    ),
                    shape: "ROUNDED",
                    showBorder: index(local!dates, fv!item, " ") <> " "
                  )
                )
              )
            }
          )
        )
      },
      height: "AUTO",
      style: "NONE",
      shape: "ROUNDED",
      padding: "STANDARD",
      marginBelow: "STANDARD",
      showShadow: true
    )
  }
)