diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index e7055da..06d52c4 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -32,7 +32,7 @@ jobs:
           checkout: false
 
       - shell: bash
-        run : rm -rf stage
+        run: rm -rf stage
 
       - uses: ./
         with:
@@ -44,3 +44,16 @@ jobs:
         with:
           autobuild-version: main
           checkout: false
+      
+      # Test custom python version
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.10"
+      - uses: ./
+        with:
+          setup-python: false
+      - name: Check python version
+        shell: bash
+        run: |
+          ver="$(python --version)"
+          [[ "$ver" == "Python 3.10."* ]] || exit "Expected python 3.10, got $ver" 
diff --git a/action.yaml b/action.yaml
index caa160d..976b2e2 100644
--- a/action.yaml
+++ b/action.yaml
@@ -109,7 +109,7 @@ runs:
 
     - name: Checkout build variables
       uses: actions/checkout@v3
-      if: inputs.checkout-build-variables
+      if: ${{ fromJSON(inputs.checkout-build-variables) }}
       with:
         repository: secondlife/build-variables
         ref: ${{ inputs.build-variables-ref }}
@@ -117,7 +117,7 @@ runs:
 
     - name: Setup python
       uses: actions/setup-python@v4
-      if: inputs.setup-python
+      if: ${{ fromJSON(inputs.setup-python) }}
       with:
         python-version: 3.x
 
@@ -125,7 +125,7 @@ runs:
       shell: bash
       env:
         VERSION: ${{ inputs.autobuild-version }}
-      if: inputs.setup-autobuild
+      if: ${{ fromJSON(inputs.setup-autobuild) }}
       run: |
         if [[ $VERSION = *.*.* ]]; then
           pip install autobuild==$VERSION