does this work

.github/workflows/submit.yaml

@@ -12,27 +12,27 @@ env:
 jobs:
   build:
     runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.prob.outputs.ids }}
     steps:
       - uses: actions/checkout@v4
       - run: make
       - id: prob
         run: |
           make problems PROBLEMS=${{ env.FN_PROB }}
           echo "ids=$(cat ${{ env.FN_PROB }})" >> $GITHUB_OUTPUT
-
+      - run: echo "${{ steps.prob.outputs.ids }}"
 #  submit:
 #    runs-on: ubuntu-latest
 #    needs: build
 #    strategy:
 #      matrix:
 #        pid: ${{ steps.prob.outputs.ids }}  # for each problem id
 #    steps:
-#      - name: read solution
-#        id: content
+#      - id: content
 #        run: echo "body=$(cat build/${{ matrix.pid }}.txt)" >> $GITHUB_OUTPUT
 #      - name: post solution
 #        run: |
-#          # problem id and submission content
 #          echo "${{ matrix.pid }}"
 #          echo "${{ steps.content.outputs.body }}"
 #          curl --location '${{ vars.BASE_URL }}submission' \