diff --git a/action.yml b/action.yml
index 75b34d3..4678d54 100644
--- a/action.yml
+++ b/action.yml
@@ -31,14 +31,18 @@ runs:
       env:
         input_message: ${{ inputs.message }}
         commit_message: ${{ github.event.head_commit.message }}
+        status: ${{ inputs.status }}
+        repository: ${{ inputs.repository }}
+        event_pusher_name: ${{ github.event.pusher.name }}
+        event_sender_login: ${{ github.event.sender.login }}
       shell: bash
       if: always()
       id: fields
       run: |
-        if [ "${{ inputs.status }}" = "success" ]; then
+        if [ "$status" = "success" ]; then
           echo "emoji=large_green_square" >> $GITHUB_OUTPUT
           echo "color=good" >> $GITHUB_OUTPUT
-        elif [ "${{ inputs.status }}" = "failure" ]; then
+        elif [ "$status" = "failure" ]; then
           echo "emoji=large_red_square" >> $GITHUB_OUTPUT
           echo "color=danger" >> $GITHUB_OUTPUT
         else
@@ -47,23 +51,23 @@ runs:
         fi
 
         if [ ! -z "$input_message" ]; then
-          message=$input_message
+          message="$input_message"
         elif [ ! -z "$commit_message" ]; then
           # get commit message from `push` trigger
           commit_message=$(echo "$commit_message" | head -n 1)
-          message="<https://github.com/${{ inputs.repository }}/commit/${{ github.sha }}|$commit_message>"
-        elif git rev-parse --is-inside-git-dir > /dev/null 2>&1; then  
+          message="<https://github.com/$repository/commit/$GITHUB_SHA|$commit_message>"
+        elif git rev-parse --is-inside-git-dir > /dev/null 2>&1; then
           # get commit message from the current git directory to support `workflow_dispatch` trigger
           commit_message=$(git log --format=%B -n 1 | head -n 1)
-          message="<https://github.com/${{ inputs.repository }}/commit/${{ github.sha }}|$commit_message>"
+          message="<https://github.com/$repository/commit/$GITHUB_SHA|$commit_message>"
         else
           commit_message="Link to the latest commit in the repository"
-          message="<https://github.com/${{ inputs.repository }}/commit/${{ github.sha }}|$commit_message>"
+          message="<https://github.com/$repository/commit/$GITHUB_SHA|$commit_message>"
         fi
         echo "message=$message" >> $GITHUB_OUTPUT
 
-        author=${{ github.event.pusher.name }} # context from `push` trigger
-        author=${author:-${{ github.event.sender.login }}} # context from `workflow_dispatch` trigger
+        author="$event_pusher_name"               # context from `push` trigger
+        author="${author:-$event_sender_login}"   # context from `workflow_dispatch` trigger
         echo "author=$author" >> $GITHUB_OUTPUT
 
     - name: Send notification