diff --git a/.github/workflows/external_triggered_CI.yml b/.github/workflows/external_triggered_CI.yml
new file mode 100644
index 0000000000..1e46de4f3d
--- /dev/null
+++ b/.github/workflows/external_triggered_CI.yml
@@ -0,0 +1,121 @@
+on:
+  repository_dispatch:
+    types: [CI_trigger_type]
+
+env:
+    EVENT_NUMBER:  ${{ github.event.client_payload.number }}
+    BASE_SHA: ${{ github.event.client_payload.base_sha }}
+    PR_SHA: ${{ github.event.client_payload.head_sha }}
+    REPO_NAME: ${{ github.event.client_payload.github_repo }}
+    #WORKSPACE: ${{ github.workspace }}
+    PR_SERVER: ${{ vars.LTX_PR_SERVER }}
+    # WORKSPACE: $GITHUB_WORKSPACE
+
+permissions:
+    contents: read
+
+jobs:  
+  run_dymola:
+    runs-on: ubuntu-latest
+    permissions: {}
+    container:
+      image: ghcr.io/matthiasbschaefer/dymola_image:latest
+      options: --user=resimuser --rm
+      credentials:
+        username: ${{ secrets.GHCR_USER }}
+        password: ${{ secrets.GHCR_TOKEN }}
+
+    steps:
+      - uses: actions/checkout@v6
+        with: 
+            persist-credentials: false
+            fetch-depth: 0
+            repository: ${{ env.REPO_NAME }}
+      
+      - name: prepare
+        run: /work/run_scripts/prepare_tool.sh $GITHUB_WORKSPACE $EVENT_NUMBER $BASE_SHA $PR_SHA dymola
+        
+      - name: run
+        run: /work/run_scripts/run_tool.sh $GITHUB_WORKSPACE $EVENT_NUMBER $BASE_SHA dymola
+
+
+  
+  run_openmodelica:
+    runs-on: ubuntu-latest
+    permissions: {}
+    container:
+      image: ghcr.io/matthiasbschaefer/om_image:latest
+      options: --user=resimuser --rm
+      credentials:
+        username: ${{ secrets.GHCR_USER }}
+        password: ${{ secrets.GHCR_TOKEN }}
+
+    steps:
+      - uses: actions/checkout@v6
+        with: 
+            persist-credentials: false
+            fetch-depth: 0
+            repository: ${{ env.REPO_NAME }}
+      
+      - name: prepare
+        run: /work/run_scripts/prepare_tool.sh $GITHUB_WORKSPACE $EVENT_NUMBER $BASE_SHA $PR_SHA om
+        
+      - name: run
+        run: /work/run_scripts/run_tool.sh $GITHUB_WORKSPACE $EVENT_NUMBER $BASE_SHA om
+
+
+
+  overview:
+    runs-on: ubuntu-latest
+    permissions: {}
+    needs: [run_openmodelica, run_dymola]
+    if: always()
+    container:
+      image: ghcr.io/matthiasbschaefer/om_image:latest
+      options: --user=resimuser --rm
+      credentials:
+        username: ${{ secrets.GHCR_USER }}
+        password: ${{ secrets.GHCR_TOKEN }}
+  
+    
+    steps:
+      - name: create_overview
+        run: /work/run_scripts/create_overview.sh $EVENT_NUMBER
+      - name: publish
+        run: /work/run_scripts/publish_reports.sh $EVENT_NUMBER  
+
+
+
+  review:
+    runs-on: ubuntu-latest
+    needs: [run_openmodelica, run_dymola, overview]
+    if: always()
+    permissions: {}
+      # pull-requests: write
+    steps:
+      - name: Decide review event
+        id: decide
+        run: |
+          if [ "${{ needs.run_openmodelica.result }}" = "success" ] &&  [ "${{ needs.run_dymola.result }}" = "success" ]; then
+            echo "event=APPROVE" >> "$GITHUB_OUTPUT"
+          else
+            echo "event=REQUEST_CHANGES" >> "$GITHUB_OUTPUT"
+          fi
+      - name: Create review in other repo
+        env:
+          GH_TOKEN: ${{ secrets.MODELICA_TOKEN }}
+          TARGET_REPO: ${{ env.REPO_NAME }}
+          TARGET_PR:   ${{ env.EVENT_NUMBER }}
+          EVENT:       ${{ steps.decide.outputs.event }}
+          BODY:        "Please look here for details:${{ env.PR_SERVER }}/${{ env.EVENT_NUMBER }}/Modelica/PR_comparison_report.html and ${{ env.PR_SERVER }}/${{ env.EVENT_NUMBER }}/ModelicaTest/PR_comparison_report.html"
+
+        run: |
+           set -euo pipefail
+           API="https://api.github.com/repos/${TARGET_REPO}/pulls/${TARGET_PR}/reviews"
+           payload="$(jq -n --arg event "$EVENT" --arg body "$BODY" '{event: $event, body: $body}')"
+           curl --fail-with-body -sS -X POST "$API" \
+             -H "Authorization: Bearer $GH_TOKEN" \
+             -H "Accept: application/vnd.github+json" \
+             -H "Content-Type: application/json" \
+             -H "X-GitHub-Api-Version: 2022-11-28" \
+             --data "$payload"
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