Receiver SFTP Module Configuration with Header and Item ..

Hi Experts,

I am facing some in conversion, my scenario is IDOC TO Flat file.

my Pi version is P.O.7.5 , Header and item both are coming in the same line in the receiver.

my data structure is

Header
Field1
Field2
Field3
Item
Field1
Field2
Field3
Field4

i need a module parameters for this requirement, i want to maintain fixed length for Header and Items.