code: def convert_date_val_to_date(group_val):
      if isinstance(group_val, int):
          return pd.Timestamp(group_val, unit="ms")
      return pd.Timestamp(group_val)
  
imports: import copy
  import numpy
  import pandas
  import dtale.global_state
  import dtale.pandas_util
  from dtale.column_analysis import handle_cleaners
  from dtale.constants import CHART_JOINER_CHAR
  from dtale.query import build_col_key, run_query
  from dtale.utils import ChartBuildingError, build_formatters, classify_type, find_dtype, find_dtype_formatter, flatten_lists, get_dtypes, json_int, make_list, triple_quote
label_desc: Use image node_id 5 for calling a global function with example usage: convert_date_val_to_date(group_val) and returns: pd, pd