搜索值是否存在于另一个工作表中，并显示警告google appscript

function searchValueInAnotherSheet() {
  var searchValue = "要搜索的值";
  var sheetName = "另一个工作表名称";
  
  var ss = SpreadsheetApp.getActiveSpreadsheet();
  var currentSheet = ss.getActiveSheet();
  var targetSheet = ss.getSheetByName(sheetName);
  
  var targetRange = targetSheet.getDataRange();
  var targetValues = targetRange.getValues();
  
  var found = false;
  
  for (var i = 0; i < targetValues.length; i++) {
    for (var j = 0; j < targetValues[i].length; j++) {
      if (targetValues[i][j] == searchValue) {
        found = true;
        break;
      }
    }
    if (found) {
      break;
    }
  }
  
  if (found) {
    Browser.msgBox("警告", "值存在于另一个工作表中！", Browser.Buttons.OK);
  } else {
    Browser.msgBox("提示", "值不存在于另一个工作表中。", Browser.Buttons.OK);
  }
}