Android In-App Billing B4A SDK for Cafe Bazaar App Store.
To start working with Poolakey, Add PoolakeyLibrary files to your Additional libraries.
Note that you are using latest version of B4A and have updated your SDK.
For more information regarding the usage of Poolakey, please check out the wiki page.
There is a fully functional sample application that demonstrates the usage of Poolakey, all you have to do is cloning the project and running the PoolakeySample.