Macros not being replace by handle template for email with macros user task

I Created my own User task which handle all macro which have macro source filled in.

protected override bool InternalExecute(ProcessExecutingContext context) {
			// IMPORTANT: When implementing long-running operations, it is crucial to
			// enable timely and responsive cancellation. To achieve this, ensure that your code is designed to
			// respond appropriately to cancellation requests using the context.CancellationToken mechanism.
			// For more detailed information and examples, please, refer to our documentation.
			if (TemplateCode == Guid.Empty || RecordId == Guid.Empty) {
				isSuccess = false; 
				return true;
			}
 
			var templateEsq = new EntitySchemaQuery(UserConnection.EntitySchemaManager, "EmailTemplate");
			var bodyColumn = templateEsq.AddColumn("Body");
			var macroColumn = templateEsq.AddColumn("Object");
			var templateEntity = templateEsq.GetEntity(UserConnection, TemplateCode);
 
			if (templateEntity == null) {
				isSuccess = false;
				return true;
			}
 
			Guid macroSource = templateEntity.GetTypedColumnValue<Guid>("ObjectId");
			string body = templateEntity.GetColumnValue(bodyColumn.Name)?.ToString() ?? "";
 
 
			var macroSourceEsq = new EntitySchemaQuery(UserConnection.EntitySchemaManager, "SysSchema");
			var idFilter = macroSourceEsq.CreateFilterWithParameters(FilterComparisonType.Equal, "UId", macroSource);
			macroSourceEsq.Filters.Add(idFilter);
			var schemaNameColumn = macroSourceEsq.AddColumn("Name");
			var macroSourceEntities = macroSourceEsq.GetEntityCollection(UserConnection);
 
			if (macroSourceEntities == null || macroSourceEntities.Count == 0) {
				isSuccess = false;
				return true;
			}
 
			string schemaName = macroSourceEntities[0].GetColumnValue(schemaNameColumn.Name)?.ToString() ?? "";
 
			var macroRegex = new Regex(@"\[#(.*?)#\]");
			var matches = macroRegex.Matches(body);
 
			if (matches.Count == 0) {
				ReturnBody = body;
				isSuccess = false; 
				return true;
			}
 
			var esq = new EntitySchemaQuery(UserConnection.EntitySchemaManager, schemaName);
			var columnMap = new Dictionary<string, string>(); 
 
			foreach (Match match in matches) {
				var macro = match.Groups[1].Value;
				if (!columnMap.ContainsKey(macro)) {
					var column = esq.AddColumn(macro);
					columnMap[macro] = column.Name;
				}
			}
 
			var entity = esq.GetEntity(UserConnection, RecordId);
			if (entity == null) {
				ReturnBody = body;
				isSuccess = false;
				return true;
			}
 
			var result = body;
			foreach (Match match in matches) {
				var macro = match.Groups[1].Value;
				if (columnMap.TryGetValue(macro, out string esqColumnName)) {
					try {
						var value = entity.GetColumnValue(esqColumnName)?.ToString() ?? "";
						result = result.Replace(match.Value, value);
					} catch (Terrasoft.Common.ItemNotFoundException) {
						try {
							var value = entity.GetColumnValue(esqColumnName + "Id")?.ToString() ?? "";
							result = result.Replace(match.Value, value);
						} catch {
							result = result.Replace(match.Value, "");
						}
					}
				}
			}
 
			ReturnBody = result;
			isSuccess = true;
			return true;
		}