How to return bool value as true or false from web api ?

public bool CompareExcel(string filePath, string templatePath, out int rowCount, out string error)
        {
            error = ""; rowCount = 0;
            bool areIdentical = false;
            string templateSheetName = "";
            List<string> columns;
            GetTemplateSchema(templatePath, out templateSheetName, out columns);
            areIdentical = CompareBySchema(filePath, templateSheetName, columns, out rowCount, out error);
            return areIdentical;
        }

[HttpGet]
        [Route("CompareExcel")]
        public IActionResult CompareExcel()
        {
          
            var DisplayFileName = Request.Form.Files[0];
            string fileName = DisplayFileName.FileName.Replace(".xlsx", "-") + Guid.NewGuid().ToString() + ".xlsx";
            string Month = DateTime.Now.Month.ToString();
            string DirectoryCreate = Path.Combine(myValue1, Month);// myValue1 + "\\" + Month + "\\" + fileName;
            CExcel ex = new CExcel();
        
            string error = "";
            int rowCount = 0;
      
            var filedata = ContentDispositionHeaderValue.Parse(Request.Form.Files[0].ContentDisposition).FileName.Trim('"');
            var dbPath = Path.Combine(DirectoryCreate, fileName);
            var InputfilePath = System.IO.Path.Combine(GetFilesDownload, "Gen.xlsx");
            using (var stream = new FileStream(dbPath, FileMode.Create))
            {
                Request.Form.Files[0].CopyTo(stream);
                stream.Flush();
                stream.Close();
            }
            GC.Collect();
            bool areIdentical = ex.CompareExcel(dbPath, InputfilePath, out rowCount, out error);
            if (areIdentical == true)
            {
// return true
            }
            else
            {
// retur false

            }
        }