Creating responses in HyperStudy (study setup)

Hi everyone,

Wondering if this is able to do when creating a response in HyperStudy.

I'd like to express a response via using a vector of result values. For example:
v_1={0, -1, -2, -7.7, 1, 0.5}

However, I'd like to discard the result values greater than (> 0) in the vector. So that, the vector v_1 becomes v_1={0, -1, -2, -7.7}.

Please help.

Any suggestions or ideas are welcome. 

Thanks in advance!

Cheers,
cncwl