Help needed in writting Customer exit - ABAP Code
I have a scenario in one of the query and need to write a customer exit for the same. Here is the scenario:
I am using one input variable XXX to get input from user which feeds value to one of the charateristic lets say "CHAR1" in query. I have one more characteristic "CHAR2" which has to get the value from the same variable XXX. This is not allowed in BI7.0 as the variable is Hierarchy Node type. It gives error that "Variable XXX is used for two different characteristics."
So i need to create one more vaiable YYY which will get the value from XXX and then YYY will feed value to CHAR2. I would appreciate if some one could tell me step by step how to write customer exit and give me the piece of ABAP code i need to write in my case.
Your help will be appreciated in terms of points.