Barcode sample dosent work on Android Studio

Hello,

my System:
Win 10
Android Studio 3.1.4

Installed EMDK 6.9

if i click on build i get a error message
Failed to find target with hash string 'Zebra Technologies Corp:EMDK APIs:26' in: C:\Users\user\AppData\Local\Android\Sdk

and if i insert regarding the info from the web the provided solution:

fileTree(include: ['com.symbol.emdk.jar'], dir: 'C:\\Users\\user\\AppData\\Local\\Android\\Sdk\\add-ons\\addon-symbol_emdk-symbol-26\\libs')

in the file build.gradle

i get this error:

Could not find method provided() for arguments [directory 'C:\Users\user\AppData\Local\Android\Sdk\add-ons\addon-symbol_emdk-symbol-26\libs'] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

anybody a good idea how i can solve that :-(

regards