OSR saving results

HI I want to preform a simple loop where I find the optimal Taylor rule weight on inflation phipi for a range of incremental increases to the output weight phiy. I intend to use @#for and @#endfor. However I can not find the optimal phipi from the osr in the workspace (only the command window) to save each iteration (or just one iteration) of the loop
See below,
Thanks
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optim_weights;

pi 1;
y 0.5;
end;

phiy=0

osr_params phipi;

phipi=1.5;

osr (nograph)

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Please provide a full mod-file.