Hi, working with bundles, gretl is "too liberal" for my taste: <hansl> bundle bb = null matrix ms = zeros(1,1) scalar bb.s = ms # want to have scalar string check = typestr(inbundle(bb,s)) print check # yields "matrix" </hansl> You could say, why do expect to get out a scalar if you stuff in a matrix, but this is for illustration. I'd rather have gretl flag an error if it doesn't want to comply with my "scalar" assignment. Then I could do something like 'ms[1,1]' for example. But my ideal here would be that gretl sees the "scalar" keyword and cast the 1x1-matrix to a scalar number type. thanks, sven