echo is returning empty

OS - AIX 6.1

I am have below entry in my .profile
DS_LIB=/opt/IBM/InformationServer/Server/DSEngine/bin
export DS_BIN

When I do echo $DS_BIN, echo is returning empty
$ echo $DS_BIN
$

I never had this kind of issue earlier, please help me.

Thanks
srimitta

you're setting 'DS_LIB', but exporting 'DS_BIN'

it not would be: export DS_LIB ---> echo $DS_LIB

Sorry, it was my typo mistake

I am have below entry in my .profile
DS_BIN=/opt/IBM/InformationServer/Server/DSEngine/bin
export DS_BIN

When I do echo $DS_BIN, echo is returning empty
$ echo $DS_BIN
$

---------- Post updated at 12:45 PM ---------- Previous update was at 12:42 PM ----------

export $DS_BIN is also returning empty

When I do echo $DS_BIN, echo is returning empty
$ echo $DS_BIN
$

how do you 'source' your .profile file?

. .profile