diff --git a/micro/microfunctions.go b/micro/microfunctions.go
index 62bccd6c..6ed3d52c 100644
--- a/micro/microfunctions.go
+++ b/micro/microfunctions.go
@@ -946,3 +946,18 @@ func IsNilInterface(i any) bool {
 		return false
 	}
 }
+
+// StringFromMassInt64 - преобразование массива int64 в строку
+func StringFromMassInt64(A []int64, delim string) string {
+
+	var buffer bytes.Buffer
+	for i := 0; i < len(A); i++ {
+		s1 := StringFromInt64(A[i])
+		buffer.WriteString(s1)
+		if i != len(A)-1 {
+			buffer.WriteString(delim)
+		}
+	}
+
+	return buffer.String()
+}
diff --git a/micro/microfunctions_test.go b/micro/microfunctions_test.go
index 6f675a19..aef321d8 100644
--- a/micro/microfunctions_test.go
+++ b/micro/microfunctions_test.go
@@ -829,3 +829,27 @@ func TestIsNilInterface(t *testing.T) {
 		t.Error("Expected true for nil interface")
 	}
 }
+
+func TestStringFromMassInt64(t *testing.T) {
+	// Test with an empty array
+	emptyArray := []int64{}
+	emptyResult := StringFromMassInt64(emptyArray, ",")
+	if emptyResult != "" {
+		t.Errorf("Expected empty string, but got: %s", emptyResult)
+	}
+
+	// Test with an array of single element
+	singleArray := []int64{42}
+	singleResult := StringFromMassInt64(singleArray, ",")
+	if singleResult != "42" {
+		t.Errorf("Expected '42', but got: %s", singleResult)
+	}
+
+	// Test with an array of multiple elements
+	multipleArray := []int64{1, 2, 3}
+	multipleResult := StringFromMassInt64(multipleArray, "-")
+	expectedResult := "1-2-3"
+	if multipleResult != expectedResult {
+		t.Errorf("Expected '%s', but got: %s", expectedResult, multipleResult)
+	}
+}