Formula Results Rules- Indirect type does not showing the element

I have faced following glitch while passing indirect Value to one of information Element.

Case: I have setup two elements “Basic Salary” and “House Rent Allowence”. I have created one FF formula “EAI Basic Salary” to calcuate the Basic Salary and House Rent allowence and returning salary and HRA in the FF.
Navigated to Formula Results and choose the basic salary element.
Processing Ruless : Name :Standered, Formula “EAI Basic Salary”

Formula Results :
Name : M_salary
Type : Direct Result (working fine)
Added another row in formula results
Name : HRA
Type : INDirect Result
Element: (Not listing my “House Rent Allowence” element)

Answer:

While Creating Element select / Deselect following options and issue will be resolved.

First : Priority need to be higher than your original base Element.

Uncheck Multible Entries allowed 
chek Indirect Result
Non-Recuring