diff --git a/modules/apiact/line/component.go b/modules/apiact/line/component.go
new file mode 100644
index 0000000..d5ad793
--- /dev/null
+++ b/modules/apiact/line/component.go
@@ -0,0 +1,87 @@
+package line
+
+// Component -
+type Component struct {
+	Type string `json:"type"`
+}
+
+// BoxComponent -
+type BoxComponent struct {
+	Component
+	Layout   string        `json:"layout"`
+	Contents []interface{} `json:"contents"`
+	Spacing  NullString    `json:"spacing,omitempty"`
+	Action   interface{}   `json:"action,omitempty"`
+	Flex     NullInt       `json:"flex,omitempty"`
+	Margin   NullString    `json:"margin,omitempty"`
+}
+
+// ButtonComponent -
+type ButtonComponent struct {
+	Component
+	Action  interface{} `json:"action"`
+	Height  NullString  `json:"height,omitempty"`
+	Style   NullString  `json:"style,omitempty"`
+	Color   NullString  `json:"color,omitempty"`
+	Gravity NullString  `json:"gravity,omitempty"`
+	Flex    NullInt     `json:"flex,omitempty"`
+	Margin  NullString  `json:"margin,omitempty"`
+}
+
+// FillerComponent -
+type FillerComponent struct {
+	Component
+}
+
+// IconComponent -
+type IconComponent struct {
+	Component
+	URL         string     `json:"url"`
+	Margin      NullString `json:"margin,omitempty"`
+	Size        NullString `json:"size,omitempty"`
+	AspectRatio NullString `json:"aspectRatio,omitempty"`
+}
+
+// ImageComponent -
+type ImageComponent struct {
+	Component
+	URL             string      `json:"url"`
+	Flex            NullInt     `json:"flex,omitempty"`
+	Margin          NullString  `json:"margin,omitempty"`
+	Align           NullString  `json:"align,omitempty"`
+	Gravity         NullString  `json:"gravity,omitempty"`
+	Size            NullString  `json:"size,omitempty"`
+	AspectRatio     NullString  `json:"aspectRatio,omitempty"`
+	AspectMode      NullString  `json:"aspectMode,omitempty"`
+	BackgroundColor NullString  `json:"backgroundColor,omitempty"`
+	Action          interface{} `json:"action,omitempty"`
+}
+
+// SeparatorComponent -
+type SeparatorComponent struct {
+	Component
+	Margin NullString `json:"margin,omitempty"`
+	Color  NullString `json:"color,omitempty"`
+}
+
+// SpacerComponent -
+type SpacerComponent struct {
+	Component
+	Size NullString `json:"size,omitempty"`
+}
+
+// TextComponent -
+type TextComponent struct {
+	Component
+	Text     string      `json:"text"`
+	Flex     NullInt     `json:"flex,omitempty"`
+	Margin   NullString  `json:"margin,omitempty"`
+	Size     NullString  `json:"size,omitempty"`
+	Align    NullString  `json:"align,omitempty"`
+	Gravity  NullString  `json:"gravity,omitempty"`
+	Wrap     bool        `json:"wrap"`
+	MaxLines NullInt     `json:"maxLines,omitempty"`
+	Weight   NullString  `json:"weight,omitempty"`
+	Color    NullString  `json:"color,omitempty"`
+	Action   interface{} `json:"action,omitempty"`
+}
diff --git a/modules/apiact/line/container.go b/modules/apiact/line/container.go
new file mode 100644
index 0000000..5a2bcd7
--- /dev/null
+++ b/modules/apiact/line/container.go
@@ -0,0 +1,52 @@
+package line
+
+import "errors"
+
+// BubbleContainer -
+type BubbleContainer struct {
+	Type      string          `json:"type"`
+	Direction NullString      `json:"direction"`
+	Header    *BoxComponent   `json:"header,omitempty"`
+	Hero      *ImageComponent `json:"hero,omitempty"`
+	Body      *BoxComponent   `json:"body,omitempty"`
+	Footer    *BoxComponent   `json:"footer,omitempty"`
+	Styles    interface{}     `json:"styles,omitempty"`
+}
+
+// CarouselContainer -
+type CarouselContainer struct {
+	Type     string             `json:"type"`
+	Contents []*BubbleContainer `json:"contents"`
+}
+
+// NewBubbleContainer -
+func NewBubbleContainer(direction string) *BubbleContainer {
+	obj := &BubbleContainer{}
+	obj.Type = "bubble"
+
+	switch direction {
+	case "ltr":
+	case "rtl":
+		obj.Direction = String(direction)
+	default:
+		obj.Direction = String("ltr")
+	}
+
+	return obj
+}
+
+// NewCarouselContainer -
+func NewCarouselContainer() *CarouselContainer {
+	obj := &CarouselContainer{}
+	obj.Type = "carousel"
+
+	return obj
+}
+
+// AddContent -
+func (p *CarouselContainer) AddContent(obj ...*BubbleContainer) (err error) {
+	if len(obj) == 0 {
+		return errors.New("no item")
+	}
+	return
+}
diff --git a/modules/apiact/line/line.go b/modules/apiact/line/line.go
index cb68d58..5c2b74b 100644
--- a/modules/apiact/line/line.go
+++ b/modules/apiact/line/line.go
@@ -16,6 +16,22 @@ import (
 
 var json = jsoniter.ConfigCompatibleWithStandardLibrary
 
+// NullString -
+type NullString *string
+
+// String -
+func String(s string) NullString {
+	return &s
+}
+
+// NullInt -
+type NullInt *int
+
+// Int -
+func Int(i int) NullInt {
+	return &i
+}
+
 // Line -
 type Line struct {
 	URL         string
@@ -23,31 +39,6 @@ type Line struct {
 	AccessToken string
 }
 
-// Message -
-type Message struct {
-	Type string `json:"type"`
-}
-
-// TextMessage -
-type TextMessage struct {
-	Message
-	Text string `json:"text"`
-}
-
-// ImageMessage -
-type ImageMessage struct {
-	Message
-	OriginalContentURL string `json:"originalContentUrl"`
-	PreviewImageURL    string `json:"previewImageUrl"`
-}
-
-// VideoMessage -
-type VideoMessage struct {
-	Message
-	OriginalContentURL string `json:"originalContentUrl"`
-	PreviewImageURL    string `json:"previewImageUrl"`
-}
-
 // UserInfo -
 type UserInfo struct {
 	DisplayName string `json:"displayName"`
@@ -103,42 +94,6 @@ func (p *Line) getHeader() (header map[string]string) {
 	return
 }
 
-// NewTextMessage -
-func NewTextMessage(text string) (msg TextMessage, err error) {
-	msg = TextMessage{}
-	if len(text) == 0 {
-		return msg, errors.New("message is empty")
-	}
-
-	msg.Type = "text"
-	msg.Text = text
-	return
-}
-
-// NewImageMessage -
-func NewImageMessage(originalURL, previewURL string) (msg ImageMessage, err error) {
-	msg = ImageMessage{}
-	if len(originalURL) == 0 || len(previewURL) == 0 {
-		return msg, errors.New("original url or preview url is empty")
-	}
-	msg.Type = "image"
-	msg.OriginalContentURL = originalURL
-	msg.PreviewImageURL = previewURL
-	return
-}
-
-// NewVideoMessage -
-func NewVideoMessage(originalURL, previewURL string) (msg VideoMessage, err error) {
-	msg = VideoMessage{}
-	if len(originalURL) == 0 || len(previewURL) == 0 {
-		return msg, errors.New("original url or preview url is empty")
-	}
-	msg.Type = "video"
-	msg.OriginalContentURL = originalURL
-	msg.PreviewImageURL = previewURL
-	return
-}
-
 func checkMessageStruct(msg interface{}) (valid bool) {
 	switch msg.(type) {
 	case TextMessage:
diff --git a/modules/apiact/line/message.go b/modules/apiact/line/message.go
new file mode 100644
index 0000000..d2ef42a
--- /dev/null
+++ b/modules/apiact/line/message.go
@@ -0,0 +1,71 @@
+package line
+
+import "errors"
+
+// Message -
+type Message struct {
+	Type string `json:"type"`
+}
+
+// TextMessage -
+type TextMessage struct {
+	Message
+	Text string `json:"text"`
+}
+
+// ImageMessage -
+type ImageMessage struct {
+	Message
+	OriginalContentURL string `json:"originalContentUrl"`
+	PreviewImageURL    string `json:"previewImageUrl"`
+}
+
+// VideoMessage -
+type VideoMessage struct {
+	Message
+	OriginalContentURL string `json:"originalContentUrl"`
+	PreviewImageURL    string `json:"previewImageUrl"`
+}
+
+// FlexMessage -
+type FlexMessage struct {
+	Message
+	AltText  string      `json:"altText"`
+	Contents interface{} `json:"contents"`
+}
+
+// NewTextMessage -
+func NewTextMessage(text string) (msg TextMessage, err error) {
+	msg = TextMessage{}
+	if len(text) == 0 {
+		return msg, errors.New("message is empty")
+	}
+
+	msg.Type = "text"
+	msg.Text = text
+	return
+}
+
+// NewImageMessage -
+func NewImageMessage(originalURL, previewURL string) (msg ImageMessage, err error) {
+	msg = ImageMessage{}
+	if len(originalURL) == 0 || len(previewURL) == 0 {
+		return msg, errors.New("original url or preview url is empty")
+	}
+	msg.Type = "image"
+	msg.OriginalContentURL = originalURL
+	msg.PreviewImageURL = previewURL
+	return
+}
+
+// NewVideoMessage -
+func NewVideoMessage(originalURL, previewURL string) (msg VideoMessage, err error) {
+	msg = VideoMessage{}
+	if len(originalURL) == 0 || len(previewURL) == 0 {
+		return msg, errors.New("original url or preview url is empty")
+	}
+	msg.Type = "video"
+	msg.OriginalContentURL = originalURL
+	msg.PreviewImageURL = previewURL
+	return
+}