With no standard error for Rho you won't be able to get combined estimates. I would remove it from the MODELEFFECTS statement to get MIANALYZE to run. I should mention that the missing standard error might indicate an issue with the models in QLIM themselves. I would check those to make sure there is convergence, its not overspecified in the 2nd model, etc. ... View more

Which variable is the ERROR message pointing to?  I would check the actual QLIM model output to see if there are issues with convergence.   ... View more

Hi, I just try to answer your question. Before creating your matrix in SAS/Iml at all, you can create variable 'h' using in Data Step (Data Step is reading your data line by line too) , something like... -------------------------- DATA New; SET WORK.Old; IF h=1 THEN r=w*var1; ELSE IF h=2 THEN r=w*var1; RUN; ------------------- Then you can export your variable to IML creating the matrix. ... View more