SUBMIT xxxx USING SELECTION-SET 'xxxx' statement is not working.

Hi ,

i am trying to select a variant of a program from its selection screen and execute that program by another program.

for this ,

i am using the statement    SUBMIT ZV1RVPLN3 USING SELECTION-SET 'BW LOAD'.

where ZV1RVPLN3 is the program name and "BW LOAD" is variant of the program ZV1RVPLN3.

but this statement throws error, it says "variant BW LOAD does not exist".

Help me as soon as possible.

Thanks,

Alby