From 624a7d518863c327efb99719cada56aa1ed75bed Mon Sep 17 00:00:00 2001
From: Naoki Kanatani <k12naoki@gmail.com>
Date: Wed, 25 Nov 2020 05:54:50 +0900
Subject: [PATCH] Fix unintended json marshalling error

resolve: #851
---
 block_action.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block_action.go b/block_action.go
index fe46a95cf..c15e4a3f7 100644
--- a/block_action.go
+++ b/block_action.go
@@ -6,7 +6,7 @@ package slack
 type ActionBlock struct {
 	Type     MessageBlockType `json:"type"`
 	BlockID  string           `json:"block_id,omitempty"`
-	Elements BlockElements    `json:"elements"`
+	Elements *BlockElements   `json:"elements"`
 }
 
 // BlockType returns the type of the block
@@ -19,7 +19,7 @@ func NewActionBlock(blockID string, elements ...BlockElement) *ActionBlock {
 	return &ActionBlock{
 		Type:    MBTAction,
 		BlockID: blockID,
-		Elements: BlockElements{
+		Elements: &BlockElements{
 			ElementSet: elements,
 		},
 	}