Trying to use $BITRISE_BUILD_NUMBER in my gradle but kept running into build fail

[viktorbenei]

To define a default value when BITRISE_BUILD_NUMBER is not available, you can do something like this: Intermittent build failures to execute push_to_git_remote & how to manage build number

def bitriseBuildNumber = System.getenv("BITRISE_BUILD_NUMBER")
def buildNumber = bitriseBuildNumber != null ? bitriseBuildNumber : "0"