I create a process and in one step of this process I'm trying to execute my method shopping(minishop.Customer, minishop.Product) from my minishopShop class. Unfortunately during this action I get an Exception
org.jbpm.pvm.internal.wire.WireException: method shopping(minishop.Customer, minishop.Product) is not available on object minishop.Shop@4a55ac8e (minishop.Shop)
I put Product and Customer variables on the input of the process, but method shopping can't use them. Please help.