Fastlane - how to pass value to another step

Hi @bitce
That was the first thing, which I tried to do

Since flutter is ruby lng, I wrapped commands in system:

system("envman add --key APP_CURRENT_VERSION --value ", version)
system("envman add --key APP_CURRENT_BUILD --value ", next_build)

No success. Received No build_version specified! in set-xcode-build-number step

Step yml:

- set-xcode-build-number@1:
    inputs:
    - build_short_version_string: "$APP_CURRENT_VERSION"
    - build_version_offset: ''
    - build_version: "$APP_CURRENT_BUILD"
    - plist_path: iOS/Info.plist