Thank you for the answer, very helpful. [1 1 1] ->Now it's obvious ...like it always is after the puzzel has been revealed :) Simon -- View this message in context: http://mailinglists.scilab.org/Xcos-vector-size-error-tp4033453p4033486.html Sent from the Scilab users - Mailing Lists Archives mailing list archive at Nabble.com.