Reading text for infotypes

Hi all,

I have a requirement to read text in infotype 4001.

I used FM HR_READ_INFTY_NOTE to read with parameters

Tclass = A

table :

pernr = 42

inft = 4001

subt = ?

OB= ?

st = ?

ENDDA = '11.08.2008'

BEgDA = '11.08.2008'

SEQ = ?

finally, I am not getting the result

I really dont know what are the parameter values to pass in question marks.

Anyone can help ?

Thanks and regards

Jijo