# Uploading custom artifacts > How to upload files to be included in your build artifacts ZIP file You can use a script to upload custom artifacts, such as screenshots, to `$CM_EXPORT_DIR` and include them in the build artifacts ZIP file generated by Codemagic. For example, in a [codemagic.yaml script](../getting-started/yaml/#scripts) step or Flutter workflow editor **post-test** script, use this command to copy build screenshots to `$CM_EXPORT_DIR` to be exported: ```yaml scripts: - name: Copy custom artifacts script: | #!/usr/bin/env sh cp -r build/screenshots $CM_EXPORT_DIR/screenshots ```