Gradle - importToOSB (Fail)

Error

:configEnv                                                                                                                   
Environment is set to local                                                                                                  
:deployToOSB FAILED                                                                                                          
                                                                                                                             
FAILURE: Build failed with an exception.                                                                                     
                                                                                                                             
* Where:                                                                                                                     
Build file '\build.gradle' line: 56                                                          
                                                                                                                             
* What went wrong:                                                                                                           
Execution failed for task ':deployToOSB'.                                                                                    
> Cannot get the value of write-only property 'script' on root project 'XXXX'.                                      
                                                                                                                             
* Try:                                                                                                                       
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.               
                                                                                                                             
BUILD FAILED                                                                                                                 
                                                                                                                             
Total time: 3.871 secs        

gistfile1.groovy

configurations {
  weblogic
  osb
}

dependencies {
  weblogic "com.oracle.weblogic:wlfullclient:10.3"
	osb "com.oracle.osb:alsb:11.1.0.0.0", "com.oracle.osb:sb-kernel-api:11.1.0.0.0", "com.oracle.osb:sb-kernel-impl:11.1.0.0.0", "com.oracle.osb:sb-kernel-wls:11.1.0.0.0"   
}

task deployToOSB << {  	

	ant.taskdef(name: 'wlst',
		classname: 'weblogic.ant.taskdefs.management.WLSTTask',
		classpath: (configurations.weblogic + configurations.osb).asPath)
	ant.wlst(fileName: config.osb.importScript,
			debug: true ,  
			failOnError: false ,
			arguments: "$config.wls.user $config.wls.password $config.wls.adminurl $project.name $config.osb.importjar $config.osb.importCustomFile"){
	script(){
			adminUser=sys.argv[1]  
			adminPassword=sys.argv[2]  
			adminUrl=sys.argv[3]

			passphrase = "osb"

			project=sys.argv[4]
			importJar=sys.argv[5]
			customFile=sys.argv[6]

			connect(adminUser,adminPassword,adminUrl) 
			domainRuntime()
	}}		
}